- APistillate flower
- BBisexual flower
- CStaminate flower
- ✓Both $(a)$ and $(c)$
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$A$. Asexual reproduction occurs usually by biflagellate zoospores.
$B$. Sexual reproduction is by oogamous method only.
$C$. Stored food is in the form of carbohydrates which is either mannitol or laminarin.
$D$. The major pigments found are chlorophyll $a$, $c$ and carotenoids and xanthophyll.
$E$. Vegetative cells have a cellulosic wall, usually covered on the outside by gelatinous coating of algin.
Choose the correct answer from the options given below:

$(i)$ Mesosome is formed by the extensions of plasma membrane into the cell.
$(ii)$ The pili are elongated tubular structures made up of a protein.
$(iii)$ Flagellum is composed of filament, hook and basal body.
$(iv)$ Ribosomes are about $30\; nm$ by $50\; nm$ in size.