Chlorella and Spirullina are unicellular algae, rich in proteins and are used as food supplements by space travellers.

Correct Option: B

Chlorella and Spirullina are unicellular algae, rich in proteins and are used as food supplements by space travellers.

Chara is a green alga found attached to bottoms of shallow water of ponds, pools and lakes. Male sex organ is called antheridium. Female sex organ is called oogonium. Oogonium is borne at the top of the four celled filament.

Correct Option: C

Chara is a green alga found attached to bottoms of shallow water of ponds, pools and lakes. Male sex organ is called antheridium. Female sex organ is called oogonium. Oogonium is borne at the top of the four celled filament.

In Spirogyra, sexual reproduction occurs through conjugation. Gametes are non-flagellated, morphologically similar. But physiologically different (isogamy with physiological anisogamy).

Correct Option: D

In Spirogyra, sexual reproduction occurs through conjugation. Gametes are non-flagellated, morphologically similar. But physiologically different (isogamy with physiological anisogamy).

Mannitol or laminarin is the stored food in phaeophyceae (brown algae).

Correct Option: C

Mannitol or laminarin is the stored food in phaeophyceae (brown algae).

Male gametes are flagellated in Ectocarpus (phaeophyceae). They possess heterokont, lateral flagella.

Correct Option: B

Male gametes are flagellated in Ectocarpus (phaeophyceae). They possess heterokont, lateral flagella.