Multiple choice

Which of the following statements regarding the alternation of generations in plants is INCORRECT?

  1. Gametophyte produces one or more gametangia.

  2. The single-celled haploid spore devides by meiosis and forms gametophyte.

  3. The sporophyte typically give rise to one or more sporangia.

  4. Zygote divides by mitosis and forms sporophyte.

  5. Two single-celled haploid gametes fuse to form a single-celled diploid zygote.
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B Correct answer
Explanation

The single-celled haploid spore germinates, dividing by the normal process (mitosis), which maintains the number of chromosomes at n. The result is a multi-cellular haploid organism, called the gametophyte (because it produces gametes at maturity).

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