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(B) The $Palmella$ stage is a survival mechanism observed in certain algae like $Chlamydomonas$.During unfavourable conditions,such as drought or lack

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During unfavourable conditions

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(B) The $Palmella$ stage is a survival mechanism observed in certain algae like $Chlamydomonas$.During unfavourable conditions,such as drought or lack of water,the flagella of the zoospores are withdrawn,and the cells become non-motile.These cells secrete a mucilaginous sheath around themselves,and they may divide to form a colony-like structure embedded in the mucilage.This aggregation is known as the $Palmella$ stage.When favourable conditions return,these cells are released and develop into new individual plants.

Column $I$	Column $II$
$a.$ Shallowest depth	$(i)$ Green algae
$b.$ Intermediate depth	$(ii)$ Brown algae
$c.$ Greatest depth	$(iii)$ Red algae

The $Palmella$ stage is produced:

Similar Questions

Identify the organism shown in the given figure.

$A.$ In algae,the embryo is formed from the zygote after fertilization.
$R.$ Algae reproduce sexually through conjugation.

Which group of plants lacks differentiated organs such as roots,stems,and leaves?

In $Spirogyra$,a ladder-like structure is formed during:

Match Column $I$ with Column $II$ and choose the correct option:

Column $I$ Column $II$

$a.$ Shallowest depth $(i)$ Green algae

$b.$ Intermediate depth $(ii)$ Brown algae

$c.$ Greatest depth $(iii)$ Red algae

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