Question

Who ever answers this will be marked as brainlist
Subject : Biology
Class : 7​

Answer 1

Answer:

Heya___!!

Here is your answer___!!!

1. Pytophora and sphyrogyra are filamentous forms of algae.
2. Chrystophyra algae indicator of pollution free water environment.
3. Diatoms contain silica in their cell wall.
4. The half cell of each desmid is joined at a central bridge called Charophyta.

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