Question

A highly thickened non-motile spore is

• A. Macrozoospore
• B. Microzoospore
• C. Aplanospore
• D. Hypnospore

Answer 1

The correct option is D Hypnospore

Hypnospores are non-motile, thickened asexual spores in Chlamydomonas. They are the means of asexual reproduction in Chlamydomonas. The protoplasts of palmella develop a thick wall to form the hypnospores. They may develop a red-coloured pigment haematochrome in Chlamydomonas nivalis and thus causes the phenomenon of red snow. On the arrival of favorable conditions, they develop into zoospores.

Thus, the correct answer is option D.