Neet Solved Paper 2013 Question 15
Question: Pigment-containing membranous extensions in some cyan bacteria are
Options:
A) heterocyst
B) basal bodies
C) pneumatophores
D) chromatophores
Show Answer
Answer:
Correct Answer: D
Solution:
- Cyanobacteria contain chlorophyll but the chlorophyll is not located in chloroplasts, rather it is found in chromatophores, enfolding of the plasma membrane, where photosynthesis is carried out. Heterocysts are specialised nitrogen fixing cells formed by some filamentous cyanobacteria such as Nostoc. A basal body is an organelle formed from a centriole and a short cylindrical array of microtubules. Pneumatophores are lateral roots that grow upward for varying distance and function as the site of oxygen intake for the submerged primary roots.
