Multiple choice

What is the unique characteristic of diatoms?

  1. They do not have a cell wall.

  2. Their cell wall is made up of silica.

  3. Their cell membrane is made up of silica.

  4. Their cells lack cytoplasm.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Diatoms are a kind of algae. Their cell wall is composed of silica.

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