Question

Which one of the following is a wheat fruit?
A) Achene
B) Cypsela
C) Caryopsis
D) Endosperm

Answer 1

Hint: It is a type of dry, indehiscent fruit. Considering their fruit wall and the seed are intimately fused into a single unit. It is a true fruit type that is mainly found in the Gramineae family.

Complete answer:
When we talk about the wheat fruit it is those plants where the seed coat is fused with the fruit coat. Let us infer about all the following options-
A) Achene is the dried one seeded fruit from which seeds are not released and the fruit does not open. Example buckwheat, caraway.
B) Cypsela is a dried single seeded fruit which is formed from a double ovary of which one develops into a seed. Example sunflower.
C) Caryopsis is the fruit in which the seed coat is fused with the seed wall. For example wheat fruit. The skull of this plant is usually dried up as their fruit wall and the seed coat is fused. In most of the grains, the hulls to be separated before processing are actually flower bracts. The embryos in these seeds are indistinguishable and are highly developed.
D) Endosperm is a tissue that is present in the seed that works up in the fertilization.

Additional Information:
Point we should know about caryopsis:
1. Seed coat fused with seed wall.
2. Pappus is absent
3. Thalamus is fused with pericarp.
4. It is a monocarpellary superior ovary.
5. It is called as true fruit

Therefore the correct answer is option ‘C’.

Note: Cremaster muscles and dartos contract of the scrotal sac help in the positioning of testes. Although male ejaculate around 200-300millions sperm, very few of them reach the site of fertilisation. Most sperms get killed in the acidic environment of the female reproductive tract. So many sperms are needed to increase the livelihood of fertilisation.