7
Biology
Control and Coordination
377+ practice questions available
Sample Practice Questions
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1
Easy
Abscisic acid is also known as the:
AGrowth hormone
BRipening hormone
CStress hormone of plants
DFlowering hormone
2
Medium
The diagram shows phototropism in a plant shoot. The bending towards light occurs because:
ACells on the lit side grow faster
BAuxin accumulates on the shaded side causing more cell elongation there
CLight kills cells on the illuminated side
DThe stem becomes rigid on the shaded side
3
Easy
Which hormone regulates blood sugar levels?
AThyroxine
BAdrenaline
CInsulin
DGrowth hormone
4
Hard
Which of the following is NOT a part of the forebrain?
ACerebrum
BThalamus
CHypothalamus
DCerebellum
5
Medium
Assertion (A): Nerve impulses always travel from the dendrite to the axon end of a neuron. Reason (R): The chemical signal at the synapse can only be released from the axon end.
ABoth A and R are true and R is the correct explanation of A
BBoth A and R are true but R is not the correct explanation of A
CA is true but R is false
DA is false but R is true
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