Coordination and Response
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Nervous control in humans
SubtopicNervous control in humans under Coordination and Response for Grade 12 IGCSE.
Preview questions (no answers)
- 1.
In the human nervous system, where is the cytoplasm of a motor neuron located?
A.Only in the axon
B.In the cell body and the axon
C.Only in the synapse
D.Only in the dendrites
- 2.
Which of these is NOT an automatic reflex?
A.Knee-jerk reaction
B.Withdrawing hand from a hot stove
C.Picking up a book to read
D.Sneezing when dust enters the nose
- 3.
Which neuron is usually the first to be activated when you step on a sharp pin?
A.Motor neuron
B.Sensory neuron
C.Relay neuron
D.Brain neuron
Download the worksheet for Coordination and Response - Nervous control in humans to practice offline. It includes additional chapter-level practice questions.
Sense organs (Eye)
SubtopicSense organs (Eye) under Coordination and Response for Grade 12 IGCSE.
Preview questions (no answers)
- 1.
What happens to the image formed on the retina before it is perceived by the brain?
A.It is magnified
B.It is turned upright by the brain
C.It is filtered for color
D.It is mirrored
- 2.
Which structure provides the most nourishment to the cells of the retina?
A.The choroid
B.The vitreous humor
C.The lens
D.The sclera
- 3.
What describes the change in the iris when you enter a dark room?
A.Circular muscles contract, pupil narrows
B.Radial muscles contract, pupil widens
C.Ciliary muscles relax, pupil narrows
D.Suspensory ligaments tighten, pupil widens
Download the worksheet for Coordination and Response - Sense organs (Eye) to practice offline. It includes additional chapter-level practice questions.
Preview questions (no answers)
- 1.
Which organ filters hormones out of the blood so they can be processed by the liver or excreted?
A.The lungs
B.The heart
C.The kidneys
D.The stomach
- 2.
What is the name of the storage carbohydrate found in the liver that is affected by insulin and glucagon?
A.Glucose
B.Starch
C.Glycogen
D.Cellulose
- 3.
When adrenaline is released, where is blood diverted away from?
A.The heart
B.The skeletal muscles
C.The brain
D.The digestive system
Download the worksheet for Coordination and Response - Hormones to practice offline. It includes additional chapter-level practice questions.
Homeostasis
SubtopicHomeostasis under Coordination and Response for Grade 12 IGCSE.
Preview questions (no answers)
- 1.
Which statement about insulin is correct?
A.It is an enzyme that digests sugar
B.It is a hormone that travels in the blood
C.It is a gas produced by the lungs
D.It is a waste product of the liver
- 2.
What is the effector in the response to high blood glucose?
A.The Pancreas
B.The Brain
C.The Liver
D.The Skin
- 3.
In the liver, glucose is stored as which polymer?
A.Starch
B.Cellulose
C.Glycogen
D.Protein
Download the worksheet for Coordination and Response - Homeostasis to practice offline. It includes additional chapter-level practice questions.
Tropic responses (Phototropism/Gravitropism)
SubtopicTropic responses (Phototropism/Gravitropism) under Coordination and Response for Grade 12 IGCSE.
Preview questions (no answers)
- 1.
What happens if you place an opaque cap over the zone of elongation but leave the tip exposed to unilateral light?
A.The shoot grows straight
B.The shoot bends toward the light
C.The shoot dies
D.The shoot grows away from the light
- 2.
Which of these is NOT a characteristic of a tropism?
A.It is a growth response
B.It is permanent
C.It is a rapid, reversible movement
D.It is directed by a stimulus
- 3.
In the gravitropic response of a shoot, which side of the horizontal stem has the fastest growth rate?
A.The lower side
B.The upper side
C.The tip
D.The base
Download the worksheet for Coordination and Response - Tropic responses (Phototropism/Gravitropism) to practice offline. It includes additional chapter-level practice questions.