Which of the following features about the group of organism…

Chemistry NEET Full Syllabus Mock Test 180 Question New Syllabus Mock Test - 15 PCB Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 13, 2026

Which of the following features about the group of organisms known for making "Diatomaceous earth" are correct?

This group also includes golden algae, which are called the chief producers of the ocean.

The gritty cell wall deposits of these organisms are used in polishing and in the filtration of oils and syrups.

They are macroscopic and float passively in water currents.

Desmids show a soap-box-like arrangement of the cell wall.

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The correct answer is:

Diatoms are called the chief producers of the ocean, not desmids. Both diatoms and desmids are microscopic and float passively in water currents. In diatoms, the cell wall forms two thin, overlapping shells that fit together like a soap box.

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