Question

Which of the following is an example of alternation of generations?

A) A grandparent and grandchild each have dark hair, but the parent has blond hair.
B) A diploid plant (sporophyte) produces, by meiosis, a spore that gives rise to a multicellular, haploid pollen grain (gametophyte).
C) A diploid animal produces gametes by meiosis, and the gametes undergo fertilization to produce a diploid zygote.
D) A haploid mushroom produces gametes by mitosis, and the gametes undergo fertilization, which is immediately followed by meiosis.

Answer 1

Option B) A diploid plant (sporophyte) produces, by meiosis, a spore that gives rise to a multicellular, haploid pollen grain (gametophyte), is an example of alternation of generations in plants.

Step-by-step explanation:

Alternation of generations is a reproductive strategy exhibited by plants, and an example of this is option B) A diploid plant (sporophyte) produces, by meiosis, a spore that gives rise to a multicellular, haploid pollen grain (gametophyte). In this process, the diploid sporophyte undergoes meiosis to produce spores, which then develop into multicellular haploid gametophytes.