The osmotic expansion of a cell kept in water is chiefly regulated by [2014]
mitochondria
vacuoles
plastids
ribosomes
(2)
Vacuoles are non-cytoplasmic areas present inside cytoplasm and separated from latter by tonoplast. They are believed to be formed by expansion and pinching off from ER. There occurs a large central vacuole and many small vacuoles in plant cells. They play a major role in osmotic expansion of a cell.
Match the following and select the correct answer. [2014]
| (A) | Centriole | (i) | Infoldings in mitochondria |
| (B) | Chlorophyll | (ii) | Thylakoids |
| (C) | Cristae | (iii) | Nucleic acids |
| (D) | Ribozymes | (iv) | Basal body of cilia or flagella |
A–(iv), B–(ii), C–(i), D–(iii)
A–(i), B–(ii), C–(iv), D–(iii)
A–(i), B–(iii), C–(ii), D–(iv)
A–(iv), B–(iii), C–(i), D–(ii)
