Diatoms do not decay as readily as most other algae because-

Biology Biological Classification All Topic Question For Revision Test Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 21, 2026

They are non living cells

They have waterproof cell walls

They have siliceous cell walls

They have mucilaginous walls

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The correct answer is:

Diatoms possess cell walls made of silica (frustules), which makes them highly resistant to decomposition, so they do not decay easily compared to most other algae.

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