Pyrenoids are characteristically found in the chloroplast of

In the $Chlorophyta$ (green algae),the reserve food consisting of protein surrounded by starch forms a compact body termed:

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

Which of the following algae shows a heterotrichous habit?

The reserve food material in algae is:

What is the dominant phase in the life cycle of algae?