The female sex organ in red algae is flask-shaped and is known as

Zygotic meiosis is characteristic of $:$

Apart from chlorophyll,algae have several other pigments in their chloroplasts. Which pigments are found in blue-green algae $(BGA)$,red algae,and brown algae,that are responsible for their characteristic colours?

Rhodophyceae is red-coloured due to the presence of:

Coenocytic condition is found in

Most primitive members of the plant kingdom are