Question

Short / Long answer type questions.
Distinguish between moss protonema and green alga filament

Answer 1

• Moss protonema:

A protonema stage is a juvenile or tentative stage in the life history of mosses. It arises after the germination of a spore. It’s short lived. It’s a filamentous structure. It grows prostrate on the surface of the substratum. It’s microscopic. It bears rhizoids for fixation and absorption of water. After growth and assimilation of some time, it starts bearing the next stage I. e. Leafy stage. It’s capable of vegetative reproduction only.

• Green algae filament:

Filamentous green algae form green, cottony masses that are free-floating or attached to rocks, debris, or other plants. It consists of fine, green filaments that have no leaves, roots, stems, or flowers. They often form dense mats. On warm, sunny days, they commonly float when bubbles, generated by the plant or created by its decay, get trapped in the mats and make them buoyant.