Life Processes
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Preview questions (no answers)
- 1.
Which of these is a digestive gland?
A.Pancreas
B.Adrenal gland
C.Pituitary gland
D.Thyroid gland
- 2.
Which part of the leaf carries out the most photosynthesis?
A.Lower epidermis
B.Mesophyll
C.Vascular bundle
D.Guard cells
- 3.
The light reaction of photosynthesis takes place in:
A.Stroma
B.Grana
C.Cytoplasm
D.Nucleus
- 4.
Chlorophyll contains which metal atom at its center?
A.Iron
B.Magnesium
C.Calcium
D.Potassium
- 5.
An experiment is set up to show that carbon dioxide is necessary for photosynthesis. Two destarched plants are placed in separate airtight bell jars. One jar contains a watch glass with potassium hydroxide (), while the other does not. After exposure to sunlight, what will be the observed result when a leaf from each plant is tested with iodine solution?
A.The leaf from the jar with turns blue-black because provides oxygen for starch synthesis.
B.The leaf from the jar with does not turn blue-black because was absorbed by .
C.Both leaves turn blue-black because only acts as a catalyst and does not consume .
D.Only the leaf from the jar with turns blue-black as accelerates the photosynthesis process.
- 6.
Which of the following is the correct function of the colon?
A.Absorption of amino acids
B.Absorption of glucose
C.Absorption of water
D.Digestion of fats
- 7.
The small intestine receives digestive juices from the liver and pancreas via the:
A.Bile duct only
B.Pancreatic duct only
C.Hepatopancreatic duct
D.Thoracic duct
- 8.
During the experiment to test for the necessity of chlorophyll, the leaf is boiled in alcohol. What is the purpose of this step?
A.To soften the leaf tissue.
B.To kill the cells and stop all metabolic reactions.
C.To remove the green pigment chlorophyll so color changes are visible.
D.To dissolve the starch present in the leaf.
- 9.
Which of these enzymes is specifically adapted to function at a pH of approximately 1.5 to 2.5?
A.Trypsin
B.Salivary Amylase
C.Pepsin
D.Pancreatic Lipase
- 10.
Which of the following describes 'Assimilation' in the context of human nutrition?
A.The process of breaking down food into smaller molecules.
B.The movement of digested food from the gut into the blood.
C.The utilization of absorbed nutrients for building cell components or energy.
D.The removal of undigested food from the body.
Download the worksheet for Life Processes - Nutrition to practice offline. It includes additional chapter-level practice questions.
Preview questions (no answers)
- 1.
In human beings, the lungs are situated in the:
A.Abdominal cavity
B.Thoracic cavity
C.Pelvic cavity
D.Cranial cavity
- 2.
Which gas is released during the fermentation process in yeast?
A.Oxygen
B.Carbon dioxide
C.Hydrogen
D.Nitrogen
- 3.
Which of these processes releases more energy?
A.Aerobic respiration
B.Anaerobic respiration
C.Fermentation
D.Glycolysis in muscles
- 4.
What is the role of the diaphragm and ribs during the breathing process?
A.To pump blood
B.To change the volume of the chest cavity
C.To digest food
D.To filter the air
- 5.
The human respiratory and digestive systems are interconnected at the upper end of the throat. Study the provided flowchart and identify the structure labeled 'X' that serves as a common passage for both inhaled air and ingested food before they diverge into their respective tubes.
A.Bronchi
B.Larynx
C.Pharynx
D.Trachea
- 6.
Which of the following structures in a fish is responsible for the exchange of gases?
A.Lungs
B.Gills
C.Skin
D.Trachea
- 7.
The total number of molecules produced by the aerobic respiration of one glucose molecule is usually considered to be:
A.2
B.28
C.38
D.48
- 8.
Which of the following is true regarding the exchange of gases in plants during the daytime?
A.Only respiration takes place
B.Only photosynthesis takes place
C.Both photosynthesis and respiration take place, but photosynthesis is much faster
D.Respiration takes place in the roots while photosynthesis takes place in the leaves only
- 9.
Why do we get muscle cramps after sudden heavy exercise?
A.Due to the accumulation of ethanol in muscles
B.Due to the lack of glucose in the blood
C.Due to the buildup of lactic acid resulting from anaerobic respiration
D.Due to the excessive loss of water through sweat
- 10.
During cellular respiration, the 'Final Electron Acceptor' in the aerobic pathway is:
A.Carbon dioxide
B.Water
C.Oxygen
D.Glucose
Download the worksheet for Life Processes - Respiration to practice offline. It includes additional chapter-level practice questions.
Preview questions (no answers)
- 1.
When we are resting, the heart rate is generally:
A.Higher
B.Lower
C.Zero
D.Unpredictable
- 2.
Transpiration helps in:
A.Temperature regulation in plants
B.Absorption of water
C.Upward movement of minerals
D.All of the above
- 3.
Which part of the blood carries salts and nitrogenous wastes?
A.Hemoglobin
B.Plasma
C.WBCs
D.Platelets
- 4.
Oxygenated blood is found in the:
A.Right side of the human heart
B.Left side of the human heart
C.Pulmonary artery
D.Vena cava
- 5.
Blood pressure is measured in the:
A.Veins
B.Capillaries
C.Arteries
D.Lymph vessels
- 6.
Translocation in plants takes place through:
A.Xylem vessels
B.Xylem tracheids
C.Sieve tubes with companion cells
D.Lenticels
- 7.
The bicuspid valve (mitral valve) is located between:
A.Right atrium and right ventricle
B.Left atrium and left ventricle
C.Right ventricle and pulmonary artery
D.Left ventricle and aorta
- 8.
During heavy exercise, why does the heart rate increase?
A.To decrease the amount of oxygen reaching the muscles
B.To increase the delivery of and the removal of and lactic acid
C.To reduce the blood pressure in the arteries
D.To allow the body to store more energy in the liver
- 9.
What is the relationship between 'Source' and 'Sink' in the translocation of food in plants?
A.Source is always the root, and Sink is always the leaf
B.Source is the part that produces/releases food, and Sink is the part that uses/stores it
C.Source and Sink are fixed locations that never change with seasons
D.Source provides water, and Sink provides nutrients
- 10.
Which of the following is a function of the 'Interstitial fluid' (Tissue fluid)?
A.To produce red blood cells in the bone marrow
B.To act as a medium for the exchange of nutrients and gases between blood and cells
C.To provide lubrication for the joints
D.To transport nerve impulses between the brain and heart
Download the worksheet for Life Processes - Transportation to practice offline. It includes additional chapter-level practice questions.
Preview questions (no answers)
- 1.
What is the effect of ADH (Antidiuretic Hormone) on the kidney tubules?
A.Increases water reabsorption
B.Decreases water reabsorption
C.Stops filtration
D.Increases urea production
- 2.
Gaseous waste products in plants are removed through:
A.Xylem
B.Stomata
C.Phloem
D.Roots
- 3.
The actual volume of urine excreted per day is only about 1 to 2 liters because:
A.Remaining filtrate is evaporated
B.Remaining filtrate is reabsorbed in kidney tubules
C.The bladder is very small
D.Most water is used in digestion
- 4.
The amount of initial filtrate produced in the kidneys of a healthy adult daily is about:
A.1-2 liters
B.10-20 liters
C.180 liters
D.500 liters
- 5.
Which of the following represents metabolic waste in humans?
A.Undigested food and fiber
B.Carbon dioxide and urea
C.Sweat and saliva
D.Red blood cells and platelets
- 6.
The indentation on the concave side of the kidney where the ureter and blood vessels enter is called:
A.Cortex
B.Medulla
C.Hilum
D.Pelvis
- 7.
How do plants get rid of excess water?
A.Respiration
B.Transpiration
C.Photosynthesis
D.Translocation
- 8.
In the process of ultrafiltration, which of the following is NOT a barrier through which the filtrate must pass?
A.Endothelium of glomerular capillaries
B.Basement membrane
C.Epithelium of Bowman's capsule (podocytes)
D.The smooth muscle layer of the renal pelvis
- 9.
What is the consequence of 'Proteinuria' (loss of proteins in urine) on the body's fluid balance?
A.It leads to increased blood pressure.
B.It causes tissue edema (swelling) due to loss of blood osmotic pressure.
C.It makes the person hyperactive.
D.It increases the efficiency of the immune system.
- 10.
The 'Detrusor muscle' is a significant component of which excretory structure?
A.The Kidney Cortex
B.The Ureter
C.The Urinary Bladder
D.The Urethra
Download the worksheet for Life Processes - Excretion to practice offline. It includes additional chapter-level practice questions.
Explain nutrition in plants and animals including photosynthesis and digestion
SubtopicExplain nutrition in plants and animals including photosynthesis and digestion under Life Processes for Grade 10 CBSE.
Preview questions (no answers)
- 1.
Which part of the digestive system is the site for the absorption of most water from undigested food?
A.Small Intestine
B.Stomach
C.Large Intestine
D.Oesophagus
- 2.
The simple sugar produced during photosynthesis is:
A.Lactose
B.Sucrose
C.Glucose
D.Maltose
- 3.
Which of these is an example of an autotroph?
A.Cow
B.Green Algae
C.Lion
D.Fungi
- 4.
Which of the following are the tiny pores present on the surface of the leaves?
A.Villi
B.Alveoli
C.Stomata
D.Nephrons
- 5.
Which of the following is the most appropriate definition of Holozoic nutrition?
A.Organism lives on or inside another organism and gets food from it
B.Organism feeds on dead and decaying organic matter
C.Organism takes in solid or liquid food and digests it inside the body
D.Organism synthesizes its own food using sunlight
- 6.
If a plant is kept in a dark room for three days, it becomes 'destarched'. This means:
A.The plant loses all its chlorophyll
B.The plant uses up all its stored starch
C.The plant stops absorbing water
D.The plant's leaves turn yellow due to lack of CO2
- 7.
Which process describes the exit of food from the stomach into the small intestine?
A.It is a continuous flow controlled by gravity
B.It is regulated by a sphincter muscle
C.It occurs only when the stomach is completely full
D.It is controlled by the movement of the diaphragm
- 8.
Which of the following is a parasitic nutrition example where the organism lives inside the host's body?
A.Leech
B.Ticks
C.Tapeworm
D.Cuscuta
- 9.
In the process of digestion, the conversion of 'Proteoses' and 'Peptones' into 'Dipeptides' is catalyzed by which enzyme in the small intestine?
A.Pepsin
B.Trypsin
C.Lipase
D.Amylase
- 10.
A student observes a leaf cross-section under a microscope. Which layer has the highest concentration of chloroplasts for maximum photosynthesis?
A.Upper Epidermis
B.Palisade Mesophyll
C.Spongy Mesophyll
D.Lower Epidermis
Download the worksheet for Life Processes - Explain nutrition in plants and animals including photosynthesis and digestion to practice offline. It includes additional chapter-level practice questions.
Describe respiration, transport, and excretion in plants and animals
SubtopicDescribe respiration, transport, and excretion in plants and animals under Life Processes for Grade 10 CBSE.
Preview questions (no answers)
- 1.
Which statement correctly describes the movement of blood in the human heart?
A.Blood enters through ventricles and leaves through atria
B.Atria and ventricles contract simultaneously
C.Blood enters through atria and leaves through ventricles
D.Deoxygenated blood is pumped to the body from the left ventricle
- 2.
In humans, the right atrium receives deoxygenated blood through which major vein?
A.Pulmonary Vein
B.Vena Cava
C.Aorta
D.Renal Vein
- 3.
What is the function of companion cells in the phloem?
A.To transport water
B.To provide support to tracheids
C.To assist sieve tubes in the translocation of food
D.To perform photosynthesis
- 4.
Which type of blood vessel allows for the exchange of materials between the blood and surrounding cells?
A.Arteries
B.Veins
C.Capillaries
D.Aorta
- 5.
The exchange of nutrients and gases between the blood and the interstitial fluid occurs across the walls of:
A.Arteries
B.Veins
C.Capillaries
D.Pulmonary Artery
- 6.
Which of the following is the correct sequence of blood flow in the human body?
A.Left Atrium -> Left Ventricle -> Lungs -> Body
B.Right Atrium -> Right Ventricle -> Lungs -> Left Atrium -> Left Ventricle -> Body
C.Left Ventricle -> Right Ventricle -> Body -> Lungs
D.Right Atrium -> Left Atrium -> Body -> Lungs
- 7.
The cells of which tissue are dead and have lignified walls to provide strength and facilitate water transport?
A.Phloem
B.Parenchyma
C.Xylem
D.Collenchyma
- 8.
What is the fundamental difference between 'Serum' and 'Plasma' in human blood?
A.Serum contains red blood cells while plasma does not
B.Plasma is the liquid part of blood including clotting factors; serum is plasma without clotting factors
C.Serum is found only in the lymphatic system while plasma is in the blood vessels
D.There is no difference; the terms are synonymous
- 9.
Which of the following conditions would lead to the lowest rate of transpiration in a terrestrial plant?
A.Warm, dry, and windy day
B.Cold, humid, and still air day
C.Warm, humid, and windy day
D.Cold, dry, and still air day
- 10.
In plants, what is the role of 'adhesion' in the xylem transport system?
A.The attraction between water molecules and the walls of xylem vessels
B.The attraction between two different water molecules via hydrogen bonds
C.The active pumping of water by xylem parenchyma
D.The expansion of vessels during the day to accommodate more water
Download the worksheet for Life Processes - Describe respiration, transport, and excretion in plants and animals to practice offline. It includes additional chapter-level practice questions.
Preview questions (no answers)
- 1.
Which of the following is a waste product of plants stored in old xylem?
A.Starch
B.Resins and Gums
C.Proteins
D.Chlorophyll
- 2.
Artificial kidney works on the principle of:
A.Diffusion
B.Osmosis
C.Dialysis
D.Active transport
- 3.
The movement of food in the phloem is:
A.Only upward
B.Only downward
C.Bidirectional
D.Only towards the roots
- 4.
Which of the following is the final product of proteins after digestion?
A.Glucose
B.Amino acids
C.Fatty acids
D.Glycerol
- 5.
Plants perform both photosynthesis and respiration throughout the day. However, during the daytime, there is no net release of carbon dioxide () from the leaves. Based on the gas exchange process in plants shown in the flowchart, which of the following explains this observation?
A.The rate of respiration becomes zero during the day due to sunlight.
B.generated during respiration is used up by the plant for photosynthesis.
C.Plants only perform respiration at night and photosynthesis during the day.
D.Stomata remain closed during the day to prevent oxygen from escaping.
- 6.
The expansion and contraction of the muscles of the food pipe to push food forward is called:
A.Translocation
B.Peristaltic movement
C.Osmosis
D.Involuntary movement
- 7.
Plant waste products such as resins and gums are stored primarily in which part?
A.Young leaves
B.Old xylem
C.Phloem
D.Roots
- 8.
Why do herbivorous animals like cows have a longer small intestine compared to carnivores like tigers?
A.To store more food for long periods
B.To allow more time for the digestion of cellulose by symbiotic bacteria
C.To absorb more water from the food
D.Because they eat more food than carnivores
- 9.
A variegated leaf (green and white) was used in an experiment to test for the necessity of chlorophyll. After the starch test, which part of the leaf turned blue-black?
A.The white part only
B.The green part only
C.The entire leaf
D.Neither part
- 10.
Which of the following is the correct path for the flow of filtrate in the nephron?
A.Bowman's capsule Loop of Henle PCT DCT Collecting duct
B.Bowman's capsule PCT Loop of Henle DCT Collecting duct
C.PCT Bowman's capsule DCT Loop of Henle Collecting duct
D.DCT Loop of Henle PCT Bowman's capsule Collecting duct
Download the worksheet for Life Processes - Life Processes to practice offline. It includes additional chapter-level practice questions.
WHA5.1 WHA5.1 WHA5.1 WHA5.1 WHA T ARE LIFE PROCESSES?T ARE LIFE PROCESSES?T ARE LIFE PROCESSES?T ARE LIFE PROCESSES?T ARE LIFE PROCESSES?
SubtopicWHA5.1 WHA5.1 WHA5.1 WHA5.1 WHA T ARE LIFE PROCESSES?T ARE LIFE PROCESSES?T ARE LIFE PROCESSES?T ARE LIFE PROCESSES?T ARE LIFE PROCESSES? under Life Processes for Grade 10 CBSE.
Preview questions (no answers)
- 1.
Which of the following is common to all living things?
A.The need for energy
B.The need for wings
C.The need for gills
D.The need for soil
- 2.
Digestion is a part of which life process?
A.Respiration
B.Excretion
C.Nutrition
D.Transportation
- 3.
The energy stored in is used to:
A.Power various cellular activities
B.Cool the body down
C.Stop the heart
D.Make the cell disappear
- 4.
Viruses show no molecular movement until they:
A.Are frozen
B.Infect some cell
C.Are in the sun
D.Are in water
- 5.
What is the function of the valves present in the heart and veins?
A.To increase the speed of blood flow
B.To ensure that blood flows only in one direction and does not flow back
C.To filter the blood from nitrogenous wastes
D.To maintain the temperature of the blood
- 6.
In single-celled organisms like Amoeba, the exchange of gases and removal of wastes take place by simple:
A.Active transport
B.Diffusion through the cell surface
C.Osmosis through the contractile vacuole
D.Transpiration
- 7.
Which hormone regulates the amount of water reabsorbed by the kidney tubules?
A.Insulin
B.Adrenaline
C.Antidiuretic Hormone (ADH)
D.Thyroxine
- 8.
Which of the following statements about 'Molecular Movement' in plants is correct?
A.Plants show no molecular movement because they do not have a heart.
B.Molecular movement in plants is limited to the movement of water in xylem.
C.Invisible molecular movements occur in plants to facilitate repair and photosynthesis.
D.Molecular movement only occurs in plants during the spring.
- 9.
Which of the following is a 'nitrogenous waste' product mentioned as a byproduct of metabolic life processes?
A.Carbon dioxide
B.Urea
C.Glucose
D.Starch
- 10.
What is the relationship between 'Life Processes' and 'Death'?
A.Death is the temporary suspension of life processes.
B.Death is the state where life processes (maintenance functions) cease to occur.
C.Death occurs when the organism runs out of oxygen but continues other processes.
D.Death is the process of converting all internal energy into heat.
Download the worksheet for Life Processes - WHA5.1 WHA5.1 WHA5.1 WHA5.1 WHA T ARE LIFE PROCESSES?T ARE LIFE PROCESSES?T ARE LIFE PROCESSES?T ARE LIFE PROCESSES?T ARE LIFE PROCESSES? to practice offline. It includes additional chapter-level practice questions.
NUTRITION5.2 NUTRITION5.2 NUTRITION5.2 NUTRITION5.2 NUTRITION
SubtopicNUTRITION5.2 NUTRITION5.2 NUTRITION5.2 NUTRITION5.2 NUTRITION under Life Processes for Grade 10 CBSE.
Preview questions (no answers)
- 1.
Which of the following is the main function of the stomata?
A.Absorption of water
B.Exchange of gases
C.Transport of food
D.Anchoring the plant
- 2.
Villi are richly supplied with _______ to carry absorbed food to every cell.
A.Nerve cells
B.Blood vessels
C.Air sacs
D.Water tubes
- 3.
What are the final products of fat digestion?
A.Glucose
B.Amino acids
C.Fatty acids and glycerol
D.Starch
- 4.
Which organ secretes enzymes like amylase, trypsin, and lipase into the small intestine?
A.Liver
B.Stomach
C.Pancreas
D.Gallbladder
- 5.
The mode of nutrition where organisms take in whole food and break it down inside their bodies is called:
A.Parasitic nutrition
B.Saprotrophic nutrition
C.Holozoic nutrition
D.Autotrophic nutrition
- 6.
Which of the following is a function of the sphincter muscle in the human digestive system?
A.To produce bile salts
B.To regulate the release of food from one organ to another
C.To increase the rate of chemical digestion
D.To absorb amino acids into the blood
- 7.
In the balanced chemical equation for photosynthesis, how many molecules of water are typically used as raw materials?
A.6
B.10
C.12
D.1
- 8.
Identify the inorganic substances used by autotrophs to synthesize organic food.
A.Glucose and Oxygen
B.Carbon dioxide and Water
C.Nitrogen and Proteins
D.Chlorophyll and Sunlight
- 9.
Where does the final digestion of carbohydrates, proteins, and fats take place?
A.Stomach
B.Large Intestine
C.Small Intestine
D.Liver
- 10.
The energy currency produced during the light reaction of photosynthesis and used in the dark reaction is:
A.Glucose
B.ATP and
C.Starch
D.Chlorophyll
Download the worksheet for Life Processes - NUTRITION5.2 NUTRITION5.2 NUTRITION5.2 NUTRITION5.2 NUTRITION to practice offline. It includes additional chapter-level practice questions.
RESPIR5.3 RESPIR5.3 RESPIR5.3 RESPIR5.3 RESPIR A AAAATIONTIONTIONTIONTION
SubtopicRESPIR5.3 RESPIR5.3 RESPIR5.3 RESPIR5.3 RESPIR A AAAATIONTIONTIONTIONTION under Life Processes for Grade 10 CBSE.
Preview questions (no answers)
- 1.
Which organelle is responsible for the release of energy in the form of ATP?
A.Ribosome
B.Golgi apparatus
C.Mitochondria
D.Lysosome
- 2.
Which part of the respiratory system is commonly known as the windpipe?
A.Esophagus
B.Larynx
C.Trachea
D.Pharynx
- 3.
How many molecules of ATP are typically produced during the complete aerobic respiration of one molecule of glucose?
A.2
B.38
C.10
D.100
- 4.
Which substance is used to test the presence of Carbon Dioxide in a lab experiment?
A.Iodine solution
B.Lime water
C.Methylene blue
D.Distilled water
- 5.
The flowchart below illustrates the various pathways for the breakdown of glucose in living organisms. Based on your knowledge of cellular respiration, identify the correct number of carbon atoms present in one molecule of 'Product A' and 'Product B' respectively.
A.Product A: 3 carbons; Product B: 2 carbons
B.Product A: 2 carbons; Product B: 3 carbons
C.Product A: 2 carbons; Product B: 2 carbons
D.Product A: 3 carbons; Product B: 3 carbons
- 6.
What would happen if the hemoglobin level in a person's blood decreases significantly?
A.Energy production in cells would increase
B.Oxygen carrying capacity of the blood would decrease
C.Carbon dioxide would not be produced
D.The person would breathe slower
- 7.
The total surface area available for gas exchange in human lungs (due to alveoli) is approximately:
A.B.C.D. - 8.
In the process of inhalation, which of the following does NOT happen?
A.The ribs are lifted up.
B.The volume of the chest cavity increases.
C.The air pressure inside the lungs increases.
D.The diaphragm flattens.
- 9.
A athlete often breathes deeply and rapidly after a race. This 'oxygen debt' is required to:
A.Increase the heart rate to normal levels.
B.Oxidize the accumulated lactic acid back into pyruvate or glucose.
C.Cool down the body temperature after intense work.
D.Remove the excess nitrogen absorbed from the air.
- 10.
The vocal cords are located within which respiratory structure?
A.Pharynx
B.Larynx
C.Trachea
D.Bronchus
Download the worksheet for Life Processes - RESPIR5.3 RESPIR5.3 RESPIR5.3 RESPIR5.3 RESPIR A AAAATIONTIONTIONTIONTION to practice offline. It includes additional chapter-level practice questions.
TR 5.4 TR5.4 TR 5.4 TR5.4 TR ANSPORTANSPORTANSPORT
SubtopicTR 5.4 TR5.4 TR 5.4 TR5.4 TR ANSPORTANSPORTANSPORT under Life Processes for Grade 10 CBSE.
Preview questions (no answers)
- 1.
Which of the following is the largest artery in the human body?
A.Pulmonary Artery
B.Aorta
C.Renal Artery
D.Hepatic Artery
- 2.
What would happen if the platelets were absent in the blood?
A.Oxygen transport would stop
B.Immunity would decrease
C.Blood would not clot at the site of injury
D.Blood pressure would increase
- 3.
Which of these is NOT a function of blood?
A.Transport of digested food
B.Transport of oxygen
C.Transport of nerve impulses
D.Transport of waste products
- 4.
The valves in the heart ensure that:
A.Blood flows only in one direction
B.Blood pressure remains constant
C.Oxygen is mixed with blood
D.Blood flows faster
- 5.
The provided flowchart illustrates the exchange of materials between a blood capillary and the surrounding tissue cells. Identify the substances and based on the direction of their movement through the capillary walls.
A.: Carbon dioxide; : Oxygen
B.: Nitrogenous waste; : Nutrients
C.: Oxygen; : Carbon dioxide
D.: Plasma proteins; : Red blood cells
- 6.
Which chamber of the human heart has the thickest muscular wall?
A.Right Atrium
B.Left Atrium
C.Right Ventricle
D.Left Ventricle
- 7.
What is the role of the aorta in the human circulatory system?
A.To carry deoxygenated blood to the lungs
B.To carry oxygenated blood to all parts of the body
C.To receive deoxygenated blood from the body
D.To receive oxygenated blood from the lungs
- 8.
Why is the separation of the right and left sides of the heart useful in organisms with high energy needs like birds and mammals?
A.It allows for the mixing of blood to balance body temperature.
B.It ensures that highly oxygenated blood is efficiently delivered to the body.
C.It allows the heart to pump at a slower rate.
D.It reduces the total volume of blood needed in the body.
- 9.
Lymph eventually drains back into the circulatory system. Where does this drainage occur?
A.Into the capillaries of the lungs.
B.Into the large veins (subclavian veins) near the heart.
C.Directly into the right atrium.
D.Into the hepatic portal vein.
- 10.
How does the 'source-to-sink' movement change in a deciduous plant during the transition from winter to spring?
A.The roots become the sink and the leaves become the source.
B.The stored sugar in the roots (source) moves to the developing buds (sink).
C.The transpiration pull reverses, pulling water from leaves to roots.
D.The phloem stops functioning to save energy.
Download the worksheet for Life Processes - TR 5.4 TR5.4 TR 5.4 TR5.4 TR ANSPORTANSPORTANSPORT to practice offline. It includes additional chapter-level practice questions.
EX5.5 EX5.5 EX5.5 EX5.5 EX CRETIONCRETIONCRETION
SubtopicEX5.5 EX5.5 EX5.5 EX5.5 EX CRETIONCRETIONCRETION under Life Processes for Grade 10 CBSE.
Preview questions (no answers)
- 1.
Which of the following correctly describes excretion in single-celled organisms like Amoeba?
A.They have complex kidneys
B.Waste is removed by simple diffusion from the body surface
C.They use a dialysis machine
D.They do not produce waste
- 2.
What is the approximate volume of filtrate produced by the kidneys in a day in an adult?
A.2 Liters
B.10 Liters
C.180 Liters
D.500 Liters
- 3.
Urine formation involves three main processes. Which of the following is NOT one of them?
A.Filtration
B.Reabsorption
C.Digestion
D.Secretion
- 4.
The cluster of capillaries in the nephron is closely associated with which part?
A.Ureter
B.Bowman's capsule
C.Urinary bladder
D.Urethra
- 5.
What is the consequence of the muscular nature of the urinary bladder?
A.It can filter blood independently
B.It can contract and relax under nervous control
C.It can reabsorb glucose
D.It can produce urea
- 6.
The main function of the Henle's loop in the nephron is:
A.Filtration of blood
B.Reabsorption of water and sodium ions
C.Passage of urine to the bladder
D.Secretion of urea
- 7.
During summer, we produce less urine compared to winter because:
A.Kidneys work faster in summer
B.Most water is lost through sweating
C.We drink less water in summer
D.The body requires more water for digestion
- 8.
Glycosuria is a condition where glucose is present in the urine. This usually happens when:
A.The blood glucose level exceeds the kidney's reabsorption threshold.
B.The person eats too much salt.
C.The Loop of Henle becomes too short.
D.The glomerulus becomes impermeable to glucose.
- 9.
In the human kidney, where does the 'Filtration Slit' exist?
A.Between the cells of the PCT
B.Between the podocytes of the Bowman's capsule
C.In the walls of the renal vein
D.In the collecting duct membrane
- 10.
What prevents the backflow of urine from the urinary bladder into the ureters when the bladder contracts?
A.The presence of valves at the junction.
B.The angle at which ureters enter the bladder and the pressure of the bladder wall.
C.The force of gravity pulling the urine down.
D.The presence of cilia in the ureters.
Download the worksheet for Life Processes - EX5.5 EX5.5 EX5.5 EX5.5 EX CRETIONCRETIONCRETION to practice offline. It includes additional chapter-level practice questions.