Important Practice Questions and Answers in Biology Part 6

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BIOLOGY (39)

Neural Control and Coordination՚S Part II: Sense Organs – Eye and Ear

1. Cavity of vitreous humour in the eyes are situated

(a) Behind the lens

(b) Infront of the lens

(c) Behind the retina

(d) Between the retina and sclerotic

Answer: (a)

2. In mammalian eye, the power of accommodation is controlled by changing the shape of the lens. It is governed by

(a) Cornea

(b) Pupil

(c) Iris

(d) Ciliary body

Answer: (d)

3. The binocular vision in mammals is due to the

(a) Eyes adapted for each vision.

(b) Decussation of optic nerve at optic chiasm but no change of fibres of left and right optic nerve.

(c) Exchange of left and right optic nerve fibres after decussation at optic chiasm.

(d) None of the above.

Answer: (c)

4. Differentiation of colour is the property of the cone, it is because of the

(a) Types of cones sensory of different colours only.

(b) Different types of cones along with the different type of colour sensory centers in the brain.

(c) Single type of cones but it has the properties to differentiate the colour.

(d) The colour differentiation is entirely a property of the colour sensory center in the brain.

Answer: (b)

5. Rhodopsin (visual purple) of eye will require?

(a) Guava

(b) Mango

(c) Carrot

(d) Wheat

Answer: (c)

6. The vitreous chamber is perforated from front to behind by a narrow tube which is known as

(a) Vitreous canal

(b) Hyaloid canal

(c) Vitreous aqueous canal

(d) Posterior canal

Answer: (b)

7. Human eye lens is

(a) Spherical and can be moved forward.

(b) Biconvex and cannot be moved forward.

(c) Spherical and cannot be moved forward.

(d) Biconvex and can be moved forward.

Answer: (b)

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