Control and Coordination
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Tropic movements in plants
SubtopicTropic movements in plants under Control and Coordination for Grade 10 CBSE.
Preview questions (no answers)
- 1.
Which of the following movements is NOT growth-dependent?
A.Phototropism
B.Geotropism
C.Nastic movement (e.g., Mimosa)
D.Chemotropism
- 2.
Auxins facilitate cell ________ in the shoot.
A.Shrinkage
B.Division
C.Elongation
D.Death
- 3.
When a pollen grain lands on a stigma, the pollen tube grows down the style. This is:
A.Positive chemotropism
B.Negative chemotropism
C.Positive geotropism
D.Negative geotropism
- 4.
Geotropism is also known as:
A.Phototropism
B.Gravitropism
C.Hydrotropism
D.Chemotropism
- 5.
A seed is germinating in a completely dark chamber. It is positioned such that its radicle (future root) is pointing directly upwards and its plumule (future shoot) is pointing directly downwards. After several days, what directional changes will be observed in their growth?
A.The plumule will grow straight down and the radicle will grow straight up.
B.Both the plumule and radicle will stop growing due to the lack of light.
C.The plumule will curve 180 degrees to grow upwards, while the radicle will curve 180 degrees to grow downwards.
D.Both parts will grow horizontally in search of a light source.
- 6.
A seedling is grown in a hanging wire basket containing moist sawdust. As the roots emerge from the mesh bottom into the dry air, they are observed to curve back and grow upwards into the moist sawdust. What does this observation demonstrate regarding the hierarchy of tropic movements in roots?
A.Geotropism is the only force governing root growth direction.
B.Hydrotropism can exert a stronger influence on root direction than geotropism.
C.Roots exhibit negative hydrotropism when exposed to dry air.
D.The roots are responding to light escaping from the bottom of the basket.
- 7.
The response of a plant to the stimulus of gravity is called:
A.Phototropism
B.Hydrotropism
C.Geotropism
D.Chemotropism
- 8.
A student removes the apical bud of a young pea plant and places an agar block enriched with auxin on the left half of the cut surface. The plant is then placed in a room where the only light source is located to the left. Which of the following best describes the growth response of the plant over the next hours?
A.The shoot bends towards the left, demonstrating positive phototropism as the light stimulus overrides the applied auxin.
B.The shoot bends towards the right, because the light perception center is missing and the applied auxin stimulates elongation on the left side.
C.The shoot grows straight upwards, as the presence of light and the external auxin distribution result in equal growth on both sides.
D.The shoot does not grow or bend at all because the removal of the apical meristem permanently ceases all cell elongation.
- 9.
If a plant's roots are exposed to a gradient of both gravity and water (pulling in opposite directions), and the root grows towards the water, what can be concluded?
A.Geotropism is stronger than hydrotropism in this species.
B.The hydrotropic response has overridden the geotropic response.
C.The plant is lacking statoliths in its root cap.
D.The plant is performing negative phototropism.
- 10.
What causes the redistribution of auxin to the shaded side of a plant stem?
A.Active transport by specific PIN proteins on the cell membrane.
B.Simple diffusion because auxin is destroyed by light.
C.The movement of water toward the shaded side carrying auxin.
D.Gravitational pull on the auxin molecules themselves.
Download the worksheet for Control and Coordination - Tropic movements in plants to practice offline. It includes additional chapter-level practice questions.
Introduction to plant hormones
SubtopicIntroduction to plant hormones under Control and Coordination for Grade 10 CBSE.
Preview questions (no answers)
- 1.
A chemical substance produced in the tip of a plant that controls growth is called a:
A.Vitamin
B.Enzyme
C.Hormone
D.Protein
- 2.
Which of the following is a function of Cytokinin?
A.Inhibiting cell division
B.Delaying aging of leaves
C.Causing seed dormancy
D.Reducing stem growth
- 3.
Which hormone is primarily responsible for leaf fall (abscission)?
A.Gibberellin
B.Auxin
C.Abscisic Acid
D.Cytokinin
- 4.
Which hormone helps a plant to respond to touch (thigmotropism)?
A.Ethylene
B.Auxin
C.Cytokinin
D.Gibberellin
- 5.
A plant hormone that is often used to prevent the 'pre-harvest drop' of fruits is:
A.Auxin
B.Ethylene
C.Abscisic acid
D.None of these
- 6.
If a plant is placed horizontally, auxins accumulate on the lower side of the root. In roots, high auxin concentration:
A.Promotes growth
B.Inhibits growth
C.Has no effect
D.Causes the root to turn green
- 7.
Which of the following hormones is incorrectly matched with its function?
A.Auxin - Phototropism
B.Gibberellin - Stem elongation
C.Cytokinin - Stomatal closure
D.Abscisic acid - Seed dormancy
- 8.
Which hormone is synthesized from the amino acid Methionine?
A.Auxin
B.Ethylene
C.Cytokinin
D.Gibberellin
- 9.
What is the primary site of Abscisic Acid (ABA) synthesis within the plant cell?
A.Ribosomes
B.Mitochondria
C.Chloroplasts
D.Endoplasmic Reticulum
- 10.
The 'Avena curvature test' is a bioassay used to determine the concentration of which hormone?
A.Gibberellin
B.Cytokinin
C.Auxin
D.Ethylene
Download the worksheet for Control and Coordination - Introduction to plant hormones to practice offline. It includes additional chapter-level practice questions.
Control and coordination in animals
SubtopicControl and coordination in animals under Control and Coordination for Grade 10 CBSE.
Preview questions (no answers)
- 1.
The automatic, quick response to a stimulus without conscious thought is:
A.Voluntary action
B.Conditioned reflex
C.Reflex action
D.Thinking
- 2.
Which gland regulates the levels of calcium in the blood?
A.Thyroid
B.Pituitary
C.Parathyroid
D.Adrenal
- 3.
The basic unit of the nervous system is the:
A.Nephron
B.Neuron
C.Alveoli
D.Hormone
- 4.
Which hormone is also called the 'emergency hormone'?
A.Thyroxine
B.Adrenaline
C.Insulin
D.Estrogen
- 5.
During a 'fight or flight' response, adrenaline is released into the blood. Which of the following physiological changes occurs to divert more blood toward the skeletal muscles?
A.Contraction of muscles around small arteries in the digestive system
B.Dilation of blood vessels leading to the skin
C.Relaxation of the diaphragm and rib muscles
D.Decreased rate of heart contractions
- 6.
The Central Nervous System is protected by various layers. Inside the bony cranium, there is a fluid-filled space that acts as a 'shock absorber' for the brain. What is this fluid called?
A.Cytoplasm
B.Lymph
C.Cerebrospinal fluid
D.Synovial fluid
- 7.
When a nerve impulse reaches a muscle fiber, the muscle cell moves by changing its shape. This movement is primarily caused by the rearrangement of specialized:
A.Carbohydrate molecules in the cell wall
B.Protein molecules within the muscle cell
C.Lipid layers in the cell membrane
D.Calcium crystals in the cytoplasm
- 8.
The provided diagram illustrates the pathway of a nervous impulse during a stimulus. If the neural connection is severed at the point labeled 'F' due to a spinal injury, which of the following statements correctly describes the physiological outcome for the individual?
A.The individual will be able to feel the sensation of the stimulus and move their limb voluntarily, but the automatic reflex will be lost.
B.The individual will neither experience the sensation of the stimulus nor will the involuntary reflex action take place.
C.The involuntary reflex action will still occur, but the individual will not consciously perceive the sensation or pain of the stimulus.
D.The brain will directly take over the reflex arc, resulting in a significantly slower but more precise response to the stimulus.
- 9.
Which of the following statements about thyroxine is true?
A.Iron is essential for its synthesis
B.It regulates blood calcium levels
C.It is secreted by the parathyroid gland
D.It regulates carbohydrate, protein, and fat metabolism
- 10.
In the reflex arc, the 'Effector' is usually a:
A.Sense organ like the eye
B.Nerve cell in the brain
C.Muscle or a gland
D.Part of the spinal cord
Download the worksheet for Control and Coordination - Control and coordination in animals to practice offline. It includes additional chapter-level practice questions.
Nervous system
SubtopicNervous system under Control and Coordination for Grade 10 CBSE.
Preview questions (no answers)
- 1.
What happens to the electrical impulse at the end of the axon?
A.It stops
B.It triggers the release of chemicals
C.It turns into light
D.It goes back to the dendrite
- 2.
Receptors for hearing are located in the:
A.Nose
B.Eyes
C.Inner ear
D.Tongue
- 3.
Which part of the brain controls facial expressions and chewing?
A.Medulla
B.Cerebellum
C.Pons
D.Cerebrum
- 4.
Electrical impulses travel faster than chemical signals.
A.True
B.False
C.Both same speed
D.Cannot be determined
- 5.
In a typical reflex arc, the message is processed by the spinal cord to ensure a quick response. However, as shown in the diagram, a branch of the signal also travels to . What is the primary functional purpose of this specific pathway?
A.To initiate the immediate motor response of the effector
B.To provide the electrical energy required for the motor neuron to fire
C.To process and store the sensory information for awareness and learning
D.To inhibit the reflex action before it causes muscle fatigue
- 6.
The Peripheral Nervous System (PNS) is functionally divided into different pathways based on the type of effectors they control. According to the diagram, which division is represented by , which carries impulses to involuntary organs like the heart and smooth muscles?
A.Somatic Nervous System
B.Autonomic Nervous System
C.Central Nervous System
D.Sensory Nervous System
- 7.
Which of the following is the correct function of the midbrain?
A.Controlling heart rate
B.Memory storage
C.Relaying auditory and visual reflexes
D.Balancing the body
- 8.
Which of the following describes the 'Grey Matter' of the spinal cord?
A.It consists mainly of myelinated axons.
B.It is H-shaped and consists mainly of cell bodies and unmyelinated fibers.
C.It is the outermost layer of the spinal cord.
D.It functions only to transmit signals between the brain and the body.
- 9.
During an inhibitory synaptic transmission, the post-synaptic membrane usually becomes:
A.Depolarized
B.Hyperpolarized
C.Neutral
D.More positive
- 10.
Which part of the hindbrain is responsible for controlling involuntary actions like vomiting, sneezing, and coughing?
A.Cerebellum
B.Pons
C.Medulla Oblongata
D.Hypothalamus
Download the worksheet for Control and Coordination - Nervous system to practice offline. It includes additional chapter-level practice questions.
Voluntary, involuntary and reflex action
SubtopicVoluntary, involuntary and reflex action under Control and Coordination for Grade 10 CBSE.
Preview questions (no answers)
- 1.
Which part of the brain is most active when you are solving a complex math problem?
A.Cerebellum
B.Cerebrum
C.Medulla
D.Pons
- 2.
A person decides to stand up and walk across the room. This is a/an:
A.Reflex action
B.Involuntary action
C.Voluntary action
D.Spontaneous action
- 3.
Which of these is NOT a component of a reflex arc?
A.Receptor
B.Effector
C.Cerebrum
D.Spinal cord
- 4.
The chemicals released at the synapse to pass the message are called:
A.Hormones
B.Enzymes
C.Neurotransmitters
D.Antigens
- 5.
The following flowchart classifies three different types of actions (X, Y, and Z) occurring in the human body. Based on your knowledge of the nervous system, identify the primary control centers responsible for coordinating these three actions respectively.
A.X: Cerebrum; Y: Medulla; Z: Spinal Cord
B.X: Medulla; Y: Spinal Cord; Z: Cerebrum
C.X: Spinal Cord; Y: Cerebrum; Z: Medulla
D.X: Medulla; Y: Cerebellum; Z: Spinal Cord
- 6.
What protects the spinal cord?
A.Cranium
B.Vertebral column
C.Ribs
D.Meninges only
- 7.
In the human body, the 'Master Controller' for all voluntary and involuntary activities combined is the:
A.Spinal Cord
B.Nervous System
C.Endocrine System
D.Heart
- 8.
An individual accidentally touches a hot object but consciously chooses to hold onto it to prevent it from falling. Based on the neural pathway diagram provided, which mechanism allows the 'Cerebral Cortex' to override the automatic reflex response?
A.The cerebral cortex sends inhibitory signals via descending neurons to the motor neurons, counteracting the excitatory signals from the reflex arc.
B.The sensory neuron is prevented from releasing neurotransmitters into the spinal cord's gray matter by the midbrain.
C.The cerebellum redirects the electrical impulse from the sensory neuron toward the forebrain, bypassing the relay neuron entirely.
D.The motor neuron is physically blocked by the peripheral nervous system to stop all muscular contractions during the event.
- 9.
In the reflex action of 'coughing', what acts as the receptor?
A.The diaphragm muscle
B.Nerve endings in the lining of the throat or air passages
C.The vocal cords
D.The medulla oblongata
- 10.
What happens to the chemical signal once it has successfully crossed the synapse and triggered an impulse in the next neuron?
A.It is permanently stored in the new neuron
B.It is broken down by enzymes or taken back up by the pre-synaptic neuron
C.It turns into a hormone and enters the bloodstream
D.It evaporates from the synaptic cleft
Download the worksheet for Control and Coordination - Voluntary, involuntary and reflex action to practice offline. It includes additional chapter-level practice questions.
Chemical coordination: animal hormones
SubtopicChemical coordination: animal hormones under Control and Coordination for Grade 10 CBSE.
Preview questions (no answers)
- 1.
Endocrine glands are also known as:
A.Ductless glands
B.Duct glands
C.Enzyme glands
D.Digestive glands
- 2.
Which endocrine gland is located in the chest cavity, between the lungs?
A.Thyroid
B.Adrenal
C.Thymus
D.Pancreas
- 3.
The pancreas secretes which of the following pairs of hormones?
A.Thyroxine and Insulin
B.Insulin and Glucagon
C.Adrenaline and Insulin
D.Growth hormone and Thyroxine
- 4.
Which of these hormones is responsible for regulating the menstrual cycle in females?
A.Testosterone
B.Adrenaline
C.Oestrogen
D.Insulin
- 5.
The master coordination between the nervous system and the endocrine system is primarily managed by the:
A.Spinal cord
B.Pituitary gland
C.Hypothalamus
D.Thalamus
- 6.
In the feedback loop of insulin, what serves as the sensor for high glucose levels?
A.The brain
B.The liver
C.The pancreas
D.The kidneys
- 7.
Which of the following hormones is produced by the pituitary gland and stimulates the thyroid gland?
A.Thyroxine
B.TSH (Thyroid Stimulating Hormone)
C.Releasing Hormone
D.Insulin
- 8.
What is the primary effect of the Parathyroid hormone (PTH) on the kidneys?
A.Increases the excretion of calcium in urine
B.Decreases the reabsorption of water
C.Increases the reabsorption of calcium back into the blood
D.Stimulates the production of insulin
- 9.
Which hormone is primarily responsible for the 'Second Messenger' mechanism where it binds to a membrane receptor and triggers cAMP production?
A.Estrogen
B.Adrenaline
C.Testosterone
D.Thyroxine
- 10.
In the case of a 'Goitre', why does the thyroid gland enlarge?
A.Due to the accumulation of excess iodine
B.To compensate for the lack of iodine by increasing the number of cells to capture more iodine
C.Because of a viral infection in the neck
D.Because the pituitary gland has stopped working
Download the worksheet for Control and Coordination - Chemical coordination: animal hormones to practice offline. It includes additional chapter-level practice questions.
Explain tropic movements and plant hormones
SubtopicExplain tropic movements and plant hormones under Control and Coordination for Grade 10 CBSE.
Preview questions (no answers)
- 1.
Positive hydrotropism is observed when roots grow towards:
A.Water
B.Salt
C.Air
D.Light
- 2.
Directional growth movements in plants occur in response to stimuli like light and gravity. These are called:
A.Reflex actions
B.Tropic movements
C.Internal secretion
D.Automatic responses
- 3.
Most plant roots show:
A.Positive phototropism
B.Negative phototropism
C.Negative geotropism
D.Negative hydrotropism
- 4.
Auxin helps the cells to ________ on the side away from the light.
A.Shrink
B.Divide only
C.Grow longer
D.Become hard
- 5.
In the study of positive hydrotropism, roots grow towards a moisture source. If 'Side A' of a root is closer to a water source and 'Side B' is further away, which condition of differential growth must be met for the root to curve towards the water?
A.The cells on Side A must elongate faster than the cells on Side B.
B.The cells on Side B must elongate faster than the cells on Side A.
C.The growth rate on both Side A and Side B must remain identical to maintain direction.
D.The cells on Side B must stop growing entirely while Side A cells continue to divide.
- 6.
A plant shoot is exposed to light from only one direction. Based on the provided flowchart of the phototropic mechanism, which physiological change occurs on the shaded side of the shoot to produce the observed bending?
A.Auxin concentration decreases, leading to slower cell elongation compared to the light-facing side.
B.The cells on the shaded side shrink due to a loss of turgor pressure.
C.Auxin concentration increases, causing the cells on the shaded side to elongate more than those on the light-facing side.
D.The cells on the shaded side divide more rapidly but do not increase in length.
- 7.
A student wants to study hydrotropism. Which setup would be most appropriate?
A.Growing seeds in a dark room with light from one side.
B.Growing seeds in a revolving clinostat.
C.Growing seeds in a sieve with moist sawdust and checking root direction.
D.Applying touch to the leaves of a plant.
- 8.
In some climbing plants, tendrils show 'circumnutation' before they touch a support. This is best described as:
A.A type of geotropism.
B.A rhythmic growth movement to increase the chance of contact with a support.
C.A response to wind direction.
D.A permanent bending caused by light.
- 9.
The 'statolith-cytoskeleton' hypothesis suggests that gravity perception involves interaction between amyloplasts and:
A.The cell wall
B.Actin filaments
C.The vacuole membrane
D.The nucleus
- 10.
If a root tip is covered with an opaque cap and the whole plant is exposed to unilateral light, will the root show negative phototropism?
A.Yes, because the light is perceived by the elongation zone.
B.No, because the perception of light for phototropism occurs primarily at the tip.
C.Yes, because roots do not need to perceive light to move away from it.
D.No, because roots are only geotropic and never phototropic.
Download the worksheet for Control and Coordination - Explain tropic movements and plant hormones to practice offline. It includes additional chapter-level practice questions.
Describe nervous system, reflex action, and voluntary vs involuntary responses
SubtopicDescribe nervous system, reflex action, and voluntary vs involuntary responses under Control and Coordination for Grade 10 CBSE.
Preview questions (no answers)
- 1.
Which of the following is a receptor for heat or pain?
A.Photoreceptor
B.Thermoreceptor
C.Olfactory receptor
D.Gustatory receptor
- 2.
The automatic and rapid response to a stimulus is specifically called:
A.Voluntary response
B.Thinking process
C.Reflex action
D.Metabolic reaction
- 3.
Which part of the neuron converts the electrical signal into a chemical signal?
A.Dendrite
B.Cell body
C.Axon terminal
D.Nucleus
- 4.
Which action involves a conscious decision by the forebrain?
A.Blinking of eyes
B.Salivation on smelling food
C.Speaking to a friend
D.Withdrawing hand from a needle
- 5.
In the control and coordination of animal movements, a nerve impulse must be transferred from a neuron to a muscle fiber to trigger a response. Study the provided flowchart and identify the specialized junction labeled 'X'.
A.Dendritic tip
B.Synapse between two neurons
C.Neuromuscular Junction
D.Sensory receptor
- 6.
Which of the following is NOT involved in a simple reflex arc?
A.Sensory neuron
B.Cerebral cortex
C.Motor neuron
D.Relay neuron
- 7.
The 'thinking' part of the brain is the:
A.Hindbrain
B.Midbrain
C.Forebrain
D.Spinal cord
- 8.
Which of the following statements about 'Involuntary actions' is true?
A.They are always slow and gradual.
B.They are primarily controlled by the forebrain.
C.They are essential for maintaining the internal environment (homeostasis).
D.They can be completely stopped by thinking about them.
- 9.
In a 'Monosynaptic Reflex' like the patellar reflex (knee-jerk), what is uniquely absent?
A.The Sensory neuron
B.The Motor neuron
C.The Interneuron (Relay neuron)
D.The Effector
- 10.
If a person's 'Cerebellum' is damaged, which of the following will be most affected?
A.The ability to withdraw a hand from a hot flame.
B.The ability to regulate heartbeat.
C.The ability to walk in a straight line or coordinate precise voluntary movements.
D.The ability to perceive the smell of a flower.
Download the worksheet for Control and Coordination - Describe nervous system, reflex action, and voluntary vs involuntary responses to practice offline. It includes additional chapter-level practice questions.
Explain chemical coordination through animal hormones
SubtopicExplain chemical coordination through animal hormones under Control and Coordination for Grade 10 CBSE.
Preview questions (no answers)
- 1.
Which gland serves as the link between the nervous system and the endocrine system?
A.Adrenal
B.Thyroid
C.Hypothalamus
D.Pituitary
- 2.
Which of these statements about hormones is TRUE?
A.They are produced in large quantities
B.They act on the gland that produces them
C.They are carried by the blood to target organs
D.They are always liquid proteins
- 3.
Which hormone is involved in the development of female secondary sexual characteristics?
A.Testosterone
B.Estrogen
C.Thyroxine
D.Glucagon
- 4.
Which gland is located just below the stomach and secretes insulin?
A.Adrenal
B.Pancreas
C.Thyroid
D.Testis
- 5.
A person is suddenly frightened. Which physiological change is NOT likely to occur due to the hormonal response?
A.Increase in heart beat.
B.Contraction of skeletal muscles.
C.Increase in saliva secretion (watering of mouth).
D.Increase in breathing rate.
- 6.
Identify the gland that is located in the abdominal region and is responsible for regulating blood sugar levels.
A.Thyroid
B.Pituitary
C.Pancreas
D.Adrenal
- 7.
Which hormone is associated with the maintenance of the correct balance of carbohydrates, proteins, and fats in the body for best growth?
A.Insulin
B.Thyroxine
C.Adrenaline
D.Testosterone
- 8.
How do hormones reach their target organs after being released by a gland?
A.Through specialized ducts
B.By traveling along nerve fibers
C.By being transported through the blood circulatory system
D.By diffusing through the skin
- 9.
Which gland is responsible for the '3F' (Fight, Fright, Flight) response, and where is it located?
A.Pituitary - Base of the brain
B.Thyroid - Neck region
C.Adrenal - Above kidneys
D.Pancreas - Below stomach
- 10.
What is the role of the hormone secreted by the testes in addition to sperm production?
A.It regulates the metabolism of fats.
B.It brings about changes in appearance seen in boys at the time of puberty.
C.It controls the level of sugar in the blood.
D.It maintains the calcium-phosphorus balance.
Download the worksheet for Control and Coordination - Explain chemical coordination through animal hormones to practice offline. It includes additional chapter-level practice questions.
Control and Coordination
SubtopicControl and Coordination under Control and Coordination for Grade 10 CBSE.
Preview questions (no answers)
- 1.
Which hormone's deficiency causes diabetes mellitus?
A.Thyroxine
B.Adrenaline
C.Insulin
D.Estrogen
- 2.
Which part of the brain coordinates the process of swallowing?
A.Cerebrum
B.Cerebellum
C.Medulla
D.Forebrain
- 3.
The sensory receptors that detect light are called:
A.Olfactory receptors
B.Gustatory receptors
C.Photoreceptors
D.Phonoreceptors
- 4.
Which of the following is NOT a plant hormone?
A.Auxin
B.Gibberellin
C.Thyroxine
D.Cytokinin
- 5.
The flowchart compares two different systems of coordination in the human body. Based on your knowledge of these systems, which statement correctly identifies a characteristic of the Endocrine System?
A.It uses electrical impulses to reach specific, localized target cells quickly.
B.It can reach all cells of the body as its messengers travel through the bloodstream.
C.It consists of a network of specialized cells that provide short-lived responses.
D.Its messages are restricted only to cells that are physically connected to nerve fibers.
- 6.
In the provided diagram of a synapse, the nerve impulse is transmitted from Neuron 1 to Neuron 2. Why is the chemical signal unable to travel in the opposite direction (from B to A)?
A.The electrical impulse in Neuron 2 is too weak to cross the gap.
B.The myelin sheath on the dendrite of Neuron 2 acts as an insulator against reverse flow.
C.The receptors for neurotransmitters are only present on the axon terminal of Neuron 1.
D.The chemical neurotransmitters are only released from the axon terminals at A.
- 7.
A student studied the following diagram representing a neural pathway. If a blockage or injury occurs at the point labeled 'X', what would be the most likely consequence for the individual?
A.The individual will be able to feel the sensation but cannot perform the reflex action.
B.The individual will perform the reflex action but will not feel any sensation.
C.The individual will neither feel the sensation nor be able to perform the reflex action.
D.The individual will experience an increased speed of response to the stimulus.
- 8.
Which of the following statements about the 'Reflex Arc' is false?
A.It evolved because the thinking process of the brain is not fast enough
B.The sensory and motor neurons are connected in the spinal cord
C.The brain plays no role in recording the information that a reflex has occurred
D.Reflex arcs are found in almost all animals
- 9.
Why is the hormone 'Insulin' often injected into patients with Type 1 Diabetes rather than being taken orally as a pill?
A.Insulin is a protein and would be digested by enzymes in the stomach
B.Insulin is too large to be absorbed by the stomach lining
C.The stomach acid would turn insulin into a toxic substance
D.Oral insulin acts too quickly for the body to handle
- 10.
Which part of the neuron receives the information first from another neuron?
A.Axon
B.Cell body
C.Dendrite
D.Nerve ending
Download the worksheet for Control and Coordination - Control and Coordination to practice offline. It includes additional chapter-level practice questions.
6.16.16.16.1 ANIMALS – NERVOUS SYSTEMANIMALS – NERVOUS SYSTEMANIMALS – NERVOUS SYSTEMANIMALS – NERVOUS SYSTEMANIMALS – NERVOUS SYSTEM
Subtopic6.16.16.16.1 ANIMALS – NERVOUS SYSTEMANIMALS – NERVOUS SYSTEMANIMALS – NERVOUS SYSTEMANIMALS – NERVOUS SYSTEMANIMALS – NERVOUS SYSTEM under Control and Coordination for Grade 10 CBSE.
Preview questions (no answers)
- 1.
Which part of the neuron is first to acquire information from the environment?
A.Axon
B.Dendritic tip
C.Cell body
D.Nerve ending
- 2.
The medulla oblongata is responsible for controlling:
A.Voluntary walking
B.Blood pressure
C.Memory
D.Vision
- 3.
The cerebellum is a part of the:
A.Forebrain
B.Midbrain
C.Hindbrain
D.Spinal cord
- 4.
What triggers the release of neurotransmitters at the synapse?
A.Arrival of an electrical impulse
B.Presence of nutrients
C.A change in temperature
D.Thinking process
- 5.
The human brain is shielded from external shocks and injuries by several protective layers. Based on the provided organizational chart, what is the correct sequence of these protections from the outermost layer to the innermost layer (closest to the brain)?
A.Meninges, Cranium, Cerebrospinal Fluid
B.Cerebrospinal Fluid, Meninges, Cranium
C.Cranium, Meninges, Cerebrospinal Fluid
D.Cranium, Cerebrospinal Fluid, Meninges
- 6.
In the reflex arc pathway shown in the diagram, which component is specifically responsible for acting as a bridge within the spinal cord to connect the incoming sensory information to the outgoing motor command?
A.Sensory Neuron
B.Effector Neuron
C.Relay Neuron
D.Receptor Neuron
- 7.
Which part of the brain is the largest and most complex?
A.Midbrain
B.Hindbrain
C.Cerebrum
D.Cerebellum
- 8.
If the Medulla oblongata is damaged, which of the following vital functions would be immediately threatened?
A.Memory storage
B.Color vision
C.Heartbeat and breathing
D.Balance while walking
- 9.
Which statement about the peripheral nervous system (PNS) is correct?
A.It facilitates communication between the CNS and the rest of the body
B.It consists only of the brain and spinal cord
C.It is protected by the vertebral column
D.It processes all information without sending it to the brain
- 10.
In the context of the nervous system, 'Effectors' are primarily:
A.The sense organs like eyes and ears
B.The spinal cord and brain
C.Muscles and glands
D.Dendrites and axons
Download the worksheet for Control and Coordination - 6.16.16.16.1 ANIMALS – NERVOUS SYSTEMANIMALS – NERVOUS SYSTEMANIMALS – NERVOUS SYSTEMANIMALS – NERVOUS SYSTEMANIMALS – NERVOUS SYSTEM to practice offline. It includes additional chapter-level practice questions.
COORDINA6.2 COORDINA6.2 COORDINA6.2 COORDINA6.2 COORDINA TION IN PLTION IN PLTION IN PLTION IN PLTION IN PL ANTS ANTSANTS ANTSANTS
SubtopicCOORDINA6.2 COORDINA6.2 COORDINA6.2 COORDINA6.2 COORDINA TION IN PLTION IN PLTION IN PLTION IN PLTION IN PL ANTS ANTSANTS ANTSANTS under Control and Coordination for Grade 10 CBSE.
Preview questions (no answers)
- 1.
Control and coordination in plants is performed by:
A.Brain
B.Nervous system
C.Phytohormones
D.Muscles
- 2.
Plant movements that do not depend on growth are:
A.Faster than growth movements
B.Slower than growth movements
C.Permanent
D.Directional
- 3.
The stimulus for hydrotropism is:
A.Light
B.Gravity
C.Water
D.Chemicals
- 4.
Which hormone concentration is high in areas of rapid cell division?
A.Auxin
B.Gibberellin
C.Cytokinin
D.Abscisic acid
- 5.
When a root is placed horizontally, gravity causes auxin to accumulate on its lower side. Based on the provided diagram, how does this distribution of auxin specifically result in positive geotropism in roots?
A.High auxin concentration on the lower side inhibits cell elongation
B.High auxin concentration on the lower side promotes faster cell division
C.Auxin causes the upper side of the root to stop growing completely
D.Auxin evaporates from the upper side due to exposure to air
- 6.
The following flowchart describes the sequence of events that lead to the rapid folding of leaflets in the sensitive plant ( ). Identify the physiological process occurring at 'Stage X'.
A.Rapid cell division in the leaf base
B.Synthesis of abscisic acid to cause wilting
C.Sudden loss of water from the pulvinus cells
D.Migration of auxin to the shaded side of the leaf
- 7.
Plant movements caused by external stimuli are broadly classified into:
A.Fast and slow movements
B.Tropic and nastic movements
C.Chemical and physical movements
D.Root and shoot movements
- 8.
A scientist finds a plant that doesn't show any response to gravity. Genetic analysis shows a mutation in the PIN proteins. What is the role of PIN proteins in coordination?
A.They are efflux carriers that facilitate the directional transport of auxin
B.They are the receptors for ethylene in the fruit
C.They are the enzymes that synthesize gibberellins
D.They are the structural proteins that make up the cell wall
- 9.
When a seedling is grown in total darkness, it becomes pale, has a long weak stem, and small leaves. This condition is known as:
A.Etiolation
B.Chlorosis
C.Senescence
D.Photomorphogenesis
- 10.
In the presence of light, Auxin is degraded or moves to the dark side. Which of the following wavelengths of light is most effective in inducing phototropism?
A.Blue light
B.Red light
C.Green light
D.Infrared light
Download the worksheet for Control and Coordination - COORDINA6.2 COORDINA6.2 COORDINA6.2 COORDINA6.2 COORDINA TION IN PLTION IN PLTION IN PLTION IN PLTION IN PL ANTS ANTSANTS ANTSANTS to practice offline. It includes additional chapter-level practice questions.
HORMONES IN ANIMALS6.3 HORMONES IN ANIMALS6.3 HORMONES IN ANIMALS6.3 HORMONES IN ANIMALS6.3 HORMONES IN ANIMALS
SubtopicHORMONES IN ANIMALS6.3 HORMONES IN ANIMALS6.3 HORMONES IN ANIMALS6.3 HORMONES IN ANIMALS6.3 HORMONES IN ANIMALS under Control and Coordination for Grade 10 CBSE.
Preview questions (no answers)
- 1.
In the human body, the pancreas is located:
A.In the neck
B.Below the stomach
C.Above the kidneys
D.In the skull
- 2.
Hormones are required in ________ quantities by the body.
A.Large
B.Very small
C.Moderate
D.Unlimited
- 3.
Which part of the body is affected by the enlargement of the thyroid gland?
A.Chest
B.Abdomen
C.Neck
D.Head
- 4.
Which hormone is produced when a person is very angry or afraid?
A.Thyroxin
B.Adrenaline
C.Insulin
D.Growth Hormone
- 5.
In the feedback loop shown below, how does the endocrine system typically respond when the concentration of thyroxin in the blood falls below the optimal level?
A.The pituitary gland increases the secretion of thyroid-stimulating hormone
B.The thyroid gland immediately shrinks to conserve existing thyroxin
C.The body converts excess blood glucose into thyroxin molecules
D.The hypothalamus sends a nerve impulse to the heart to increase its rate
- 6.
The diagram below illustrates the hierarchical communication between the brain and the endocrine system. What is the specific functional role of the 'Releasing Hormones' produced by the hypothalamus in this sequence?
A.To directly act on target tissues such as muscle and bone to promote growth
B.To stimulate the pituitary gland to secrete specific hormones into the blood
C.To decrease the concentration of glucose in the bloodstream after a meal
D.To carry electrical impulses from the brain directly to the thyroid gland
- 7.
Chemical coordination is seen in:
A.Only animals
B.Only plants
C.Both plants and animals
D.Neither plants nor animals
- 8.
Compare the 'speed' and 'duration' of the nervous system vs. the endocrine system.
A.Nervous: Fast speed, long duration; Endocrine: Slow speed, short duration.
B.Nervous: Slow speed, short duration; Endocrine: Fast speed, long duration.
C.Nervous: Fast speed, short duration; Endocrine: Slow speed, long duration.
D.Both have the same speed and duration.
- 9.
The timing of hormone release is critical. Which mechanism ensures that insulin is not secreted when blood sugar is already low?
A.Positive feedback
B.Negative feedback
C.Nervous coordination
D.Diffusion gradient
- 10.
Which of the following hormones is NOT produced by the pituitary gland?
A.Growth Hormone
B.Thyroid Stimulating Hormone (TSH)
C.Thyroxine
D.Follicle Stimulating Hormone (FSH)
Download the worksheet for Control and Coordination - HORMONES IN ANIMALS6.3 HORMONES IN ANIMALS6.3 HORMONES IN ANIMALS6.3 HORMONES IN ANIMALS6.3 HORMONES IN ANIMALS to practice offline. It includes additional chapter-level practice questions.