Assertion (A) : Centriole has an organisation like a cartwheel.
Reason (R) : Centriole is made up of a central hub and nine evenly spaced triplets of microtubules.

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

'A' is false, but R is true

'A' is true and 'R' is false

Both 'A' and 'R' are true and 'R' is the correct explanation of 'A'.

Both 'A' and 'R' are true and 'R' is not the correct explanation of 'A'

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Assertion (A) is correct. Centrioles are cylindrical structures found in animal cells, and they play a crucial role in organizing the microtubules of the cytoskeleton, particularly during cell division. The organization of centrioles is indeed like a cartwheel, and the reason behind this structure is the arrangement of microtubules.

Reason (R) is also correct. The centriole is composed of nine triplets of microtubules arranged in a circular pattern, forming the spokes of the cartwheel. At the center of the arrangement, there is a hub. This organization is often referred to as the 9+0 pattern, indicating the central hub and nine triplets.

Both the assertion (A) and the reason (R) are correct, and the reason (R) explains the assertion (A). The centriole does have an organization like a cartwheel, with a central hub and nine evenly spaced triplets of microtubules.

Watch 3-min video & get full concept clarity

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

How to Join IIT after 10th