Isogamous condition with non-flagellated gametes is found in:

Consider the following statements:
$I$. They reproduce asexually by non-motile spores and sexually by non-motile gametes.
$II$. In this class,sexual reproduction is oogamous and accompanied by complex post-fertilisation developments.
$III$. The common members are $Polysiphonia$,$Porphyra$,$Gracilaria$ and $Gelidium$.
The above characteristics belong to which class of algae?

Assertion $(A)$: Algae are autotrophic in their mode of nutrition.
Reason $(R)$: Algae contain chlorophyll and other photosynthetic pigments.

Which pigments are found in algae?

Provide the answers for the following analogy-based questions:
$(i)$ Flagellated : Zoospore :: Non-flagellated : ........
$(ii)$ Volvox : Colonial :: Spirogyra : .....

In Hammerling's nucleocytoplasmic experiments,$Acetabularia$ is used,which is a: