Question

Which statement about human reproduction is false?

(A) Fertilization occurs in the oviduct.

(B) Spermatogenesis and oogenesis require different temperatures.

(C) An oocyte completes meiosis after a sperm penetrates it.

(D) The earliest stages of spermatogenesis occur closest to the lumen of the seminiferous tubules.

Short answer

(A) The statement“Fertilization occurs in the oviduct” istrue.

(B) The statement “Spermatogenesis and oogenesis require different temperatures” istrue.

(C) The statement “An oocyte completes meiosis after a sperm penetrates it” istrue.

(D) The statement “The earliest stages of spermatogenesis occur closest to the lumen of the seminiferous tubules” is false.

Step-by-step solution

Reproduction in humans

The process of reproduction is a mechanism that is responsible for maintaining the continuity of living creatures in the world. In the case of humans, reproduction occurs via the sexual method and involves the fusion of parental genomes; this reproductive strategy ensures genetic diversity.

Explanation of option ‘(A)’

Fertilization refers to sexual reproduction in which the gametic cells of both the parents unite to form a single diploid cell. This mechanism of the zygote formation occurs within the reproductive structure of the female parent; to be specific, it occurs within the oviduct.

Thus, this statement contains correct information about human reproduction.

Therefore, the given statement is true.

Explanation of option ‘(B)’

The gametic cells of males and females are produced within their individual bodies through a process termed gametogenesis. In males, the formation of sperm cells occurs via spermatogenesis, which takes place at a temperature below the normal body temperature.

In the case of human females, the formation of egg cells occurs via the oogenesis process, and this mechanism takes place at normal body temperature.

Thus, the difference related to spermatogenesis and oogenesis mentioned in this statement is accurate.

Therefore, the given statement is true.

Explanation of option ‘(C)’

An oocyte is the haploid gametic cell of human females, and it is formed by meiotic division. The first round of meiotic division completes at the embryonic stage, while the second is complete only if the secondary oocyte is fused with a sperm cell.

Thus, the statement in this option does not contain incorrect information about human reproduction.

Therefore, the given statement is true.

Explanation of option ‘(D)’

The spermatogenesis process takes place within the testes’ seminiferous tubules. In this structure, the earliest stages occur at the peripheral region, and the last stages occur at the lumen region.

Thus, this statement about spermatogenesis is not accurate in terms of human reproduction.

Therefore, the given statement is false.