The cell wall is usually composed of two overlapping halves called epitheca and hypotheca in__________?
Correct answer: A. Diatoms
- A. Diatoms
- B. Desmids
- C. Pyrrophyta
- D. Chlorophyta
Explanation
Diatoms have a frustule made of two overlapping silica halves: the larger epitheca and the smaller hypotheca. Desmids and most green algae have cell walls, but this distinctive epitheca-hypotheca arrangement is characteristic of diatoms.
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