Home
Class 11
BIOLOGY
Read the assertion and reson carefully t...

Read the assertion and reson carefully to mark the correct option out of the options given below:
Assertion : Sparrow possess poor night vision
Reason : Sparrows eyes are made up of ommatidia .

A

If both the assertion and the reason are true and the reason is a correct explanation of the assertion

B

If both the assertion and reason are true but the reason is not a correct explanation of the assertion

C

If the assertion is true but the reason is false

D

If both the assertion and reason are false

Text Solution

Verified by Experts

The correct Answer is:
C

Sparrows have mostly cones in their retina. The rods are mainly responsible for the night vision hence the number of the rods is very less thus the night vision is poor.
Promotional Banner

Similar Questions

Explore conceptually related problems

Read the assertion and reson carefully to mark the correct option out of the options given below: Assertion : Spinal cord has a column of both grey and white matter . Reason : Grey matter forms the central spinal canal .

Read the assertion and reson carefully to mark the correct option out of the options given below: Assertion : Some areas of the brain and spinal cord look white Reason : This is because cell bodies of neurons are situated in those areas.

Read the assertion and reson carefully to mark the correct option out of the options given below: Assertion : The eye is said to have power of accomodation . Reason : Ciliary muscles alters the shape of the lens for near or far vision during accomodation .

Read the assertion and reson carefully to mark the correct option out of the options given below: Assertion : Tonque is a gustatoreceptor . Reason : Receptors for gustatory sensations are located in the taste bud .

Read the assertion and reson carefully to mark the correct option out of the options given below: Assertion : Vitamin A deficiency produces right blindness. Reason : Photosensitive pigment rhodopsin is synthesised from vitamin A .

Read the assertion and reason carefully to mark the correct option out of the option given below: Assertion: Sea-faring fisherman sometimes eat raw fish. Reason: They can be deficient of Vitamin B_(1) .

Read the assertion and reason carefully to mark the correct option out of the option given below: Assertion: Starch is hydrolysed by ptyalin to maltose. Reason : Sucrase hydrolyses sucrose to lactose.

Read the assertion and reson carefully to mark the correct option out of the options given below: Assertion : Anterior lobe of pituitary is attached to hypothalamus by a vein Reason : This attachment is done through a portal vein.

Read the assertion and reson carefully to mark the correct option out of the options given below: Assertion : All motor neurons are efferent neurons. Reason : Motor neurons conduct nerve impulses from the spinal cord to the brain.