MCQ
$DNA$ is present in
- ANucleus only
- BMitochondrion only
- CChloroplast only
- ✓All the above
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$a$. Large and more numerous nucleoli are present in cells actively carrying out protein synthesis.
$b$. Nuclear pores allow bidirectional movement of molecules.
$c$. Cytoskeleton is a glycolipid structure for mechanical support, motility and maintenance of the shape of the cell.
$d$. Steroidal hormones are synthesized by Golgi complex.
| Column $I$ | Column $II$ |
| $(A)$ Limbless reptile | $(i)$ Lamprey |
| $ (B)$ Jawless vertebrate | $(ii)$ Salamander |
| $ (C)$ Amphibian | $(iii)$ Snake |
| $(D)$ Cartilaginous fish | $(iv)$ Shark |
| $ (E)$ Flightless bird | $(v)$ Ostrich |
Match items in column I with those give in column II