NEET2026BiologyChapterActual
Given below are two cross-sectional diagrams labeled as Figure X and Figure Y, representing specific cell organelles. Match the items in List I with their corresponding descriptions in List II based on these structures. List I List II A Figure X I Proteinaceous central part of a centriole B Figure Y II Encloses the centrally located microtubules C Central sheath III Organelle with a cartwheel-like organisation D Hub
Options
- AA-IV, B-III, C-I, D-II
- BA-III, B-IV, C-I, D-II
- CA-IV, B-III, C-II, D-I
- DA-III, B-IV, C-II, D-I
Correct answer
C. A-IV, B-III, C-II, D-I
Step-by-step solution
Based on the provided cross-sectional diagrams: Figure X represents the internal structure (axoneme) of a cilium or flagellum. It shows a characteristic 9+2 arrangement of microtubules, with 9 peripheral doublets and 2 centrally located singlet microtubules. Thus, A matches with IV. Figure Y represents the cross-section of a centriole. It exhibits a 9+0 arrangement with 9 peripheral triplets of microtubules and no central microtubules, giving it a cartwheel-like organisation. Thus, B matches with III. The central s