Which plants are known as primitive plants?

The method of asexual reproduction in algae is -

Sexual reproduction in algae results in the formation of

Which of the following pigments is present in all algae?

What type of life cycle is observed in the algae shown in the figure?

Read carefully the given statements about algae and choose the correct option.
$I$. The plant body is thalloid.
$II$. Mainly aquatic.
$III$. Reproduction takes place by vegetative,asexual,and sexual methods.
$IV$. Volvox and Ulothrix are the colonial forms of algae.