Question

Haploid and monoploid numbers of chromosomes of hexaploid of wheat are
(a) 21 and 42
(b) 7 and 21
(c) 21 and 7
(d) 42 and 21

Answer 1

Hint: It originated in Asia. Despite the fact that it is generally utilized as a grain crop, it very well may be utilized as a yearly scavenge crop. The ploidy is seen by the various multiples of the basic set of chromosomes present in its genome.

Complete answer:
Wheat, Triticum, has an essential chromosome number, n = 7; along these lines, the hexaploid species (Triticum aestivum) have 6n = 42. In gametes of that organism, the Haploid chromosome number is the one that presents in it; gametes contain half the chromosomes of the somatic cells. In this way, the haploid chromosome number of hexaploid wheat is 21. Monoploidy is the presence of a single fundamental chromosome set; in this way monoploidy, hexaploid wheat has x = 7 chromosomes.

Additional information: The wheat grain, the raw material of flour production and the seed planted to produce new plants, comprises of three significant parts: (1) the embryo or germ (including its sheaf, the scutellum) that produces the new plant, (2) the starchy endosperm, which fills in as nourishment for the sprouting seed and structures the crude material of flour products, and (3) various covering layers protecting the grain. However proportions vary, other cereal grains follow the same general pattern. The normal wheat grain composition is around $85\%$ endosperm $13\%$ husk, and $2\%$ embryo.
So the correct answer is ‘21 and 7’.

Note: The characteristic variations of the various types of wheat are very important agricultural considerations. The hard wheat consists of the strong wheat of Canada and the similar hard red spring (HRS) wheat of the United States. They yield amazing bread-production flour in light of their high amount of protein (roughly 12–15 %), chiefly as gluten.