Multiple choice

The life cycle of dinoflagellates is multi-staged. Which among the following statements regarding the life cycle of dinoflagellates is false?

  1. Vegetative fission dominates yielding motile diploid schizonts.

  2. The schizonts act as gametes.

  3. The diploid zygote constructs a new theca and resumes its motility as a planozygote.

  4. In several species, the zygote theca becomes much thicker and considerably larger than the vegetative theca.

  5. Following a period of obligate dormancy, the protoplast excysts.
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A Correct answer
Explanation

During periods favoured by rapid growth and population expansion, vegetative fission dominates yielding motile haploid schizonts.

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