MCQ
Lichens are ecologically important as they
- APurify air
- ✓Are pioneers of barren rocks
- CAre symbionts of algae and fungi
- DAre associated with mycorrhizal roots
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$I.$ To minimize their surface volume ratio
$II.$ To minimize heat loss
$III.$ To maximize their surface volume ratio
$IV.$ To maximize heat loss
Choose the correct combination from the given option
$(A)$ semiautonomous organelles
$(B)$ formed by division of preexisting organelles and they contain $DNA$ but lack protein synthesising machinery.
Which one of the following options is correct ?