MCQ
Choose the correct option:
- A$a-$ Some mature cells $e.g.$ erythryocytes of many mamals lack nucleus
$b-$ Sieve tube cells of vasular plants have nucleus
- B$a-$ Centriole are surrounded by cell membrane
$b-$ Pairs of microtubules are present in centriole
- ✓$a-$ Cytoskeleton contain microfilament made up of protein
$b-70S$ ribosomes are present in chloroplast
- D$a-$ colour of plants is due to aleuroplasts
$b-$ Vacuoles can occupy up to $90\%$ of the volume of the animal cell.
