Question

Given an example of a biological kingdom which exhibits gametic meiosis.

(A)Animalia
(B)Plantae
(C)Both A and B
(D)All of the above

Answer 1

Hint: The image given above is of the gametic meiosis and this type of cycle is seen in all types of sexually reproducing organisms. Meiosis occurs during gamete formation in these types of organisms.

Complete answer:
Gametic meiosis is seen in all sexually reproductive organisms whether they are animals or seed-producing plants. It is known that humans have a diplontic life cycle because the multicellular stage is diploid. The zygote grows by mitosis into a diploid, multicellular organism. a part of this multicellular organism undergoes meiosis to supply haploid cells called gametes within structures called gametangia (gametangium, singular). These gametes fuse to make a diploid zygote. Because gametes are produced by meiosis during this life cycle, each gamete is exclusive.
This is also sometimes called gametic meiosis because meiosis leads to the assembly of gametes. within the life cycle diagram, the gametes are alone on the haploid portion.

Additional Information: Other than the diplontic life cycle, two more cycles are present. Which are:-
-Haplontic:-The organisms that have a haplontic life cycle, such as fungi and some of the green algae, the multicellular stage is haploid. In this case, as soon as the diploid zygote is formed, it undergoes meiosis to produce haploid spores inside structures called sporangia (sporangium, singular). Spores can be distinguished from gametes, not by how they are produced, but based on what they do afterward: spores grow, gametes fuse.
-Haplodiplontic: In this, there are two multicellular stages, one haploid and one diploid
For some of the marine algae and all plants, the haplodiplontic life cycle becomes more complex. To complete one life cycle, there are at least two multicellular individuals. The diploid zygote grows by mitosis to become a multicellular diploid organism, the sporophyte. A sporophyte produces haploid spores through meiosis in sporangia. These spores then grow by mitosis into multicellular haploid organisms, the gametophyte. During mitosis haploid gametes are produced by a gametophyte in gametangia. A diploid zygote is formed by the fusion of gametes.
So, the correct answer is ‘Both A and B’.

Note: Haplodiplontic Life Cycle is a very complex life cycle and this life cycle is also referred to as alternation of generations and, according to some scientists it is also known as sporic meiosis because meiosis produces spores.