NEETBotanyCell - The Unit of Life
Read the following statements carefully: (A) The core of a cilium or flagellum is called the axoneme, which possesses a number of microtubules running parallel to the long axis. (B) Centrioles are made up of nine evenly spaced peripheral fibrils of tubulin protein, forming a cartwheel-like organisation. (C) The inner membrane of mitochondria forms a number of infoldings called the cristae towards the matrix. (D) Ever
Options
- ATwo
- BThree
- CFour
- DOne
Correct answer
B. Three
Step-by-step solution
Statement (A) is correct as the axoneme is the core of cilia and flagella, containing microtubules running parallel to its axis. Statement (B) is correct as centrioles possess a 9+0 arrangement of peripheral tubulin fibrils, giving them a cartwheel appearance. Statement (C) is correct as the inner mitochondrial membrane forms infoldings called cristae to increase surface area. Statement (D) is incorrect because the disc-shaped structures present on the sides of the centromere (primary constriction) are called kinet