(a) In the given figures, A represents Chara, B represents Nucule or oogonium and C represents Globule or antheridium.
(b) Chara (A) is an aquatic green alga, grows at the bottom of shallow fresh water bodies. The plant is fixed to the substratum by means of highly branched multicellular rhizoids. The axis of the plant is jointed and the joints represent nodes having whorls of short laterals. It is food for many aquatic animals.
(c) Antheridium or globule (C) is the male sex organ. It is rounded in shape. It lies below the female sex organ called oogonium or nucule (B). Nucule is ovate shaped. Both antheridium and oogonium have multicellular coverings which bring them close to the sex organs of bryophyte.
