Question

Internal fertilization occurs
A. In female body
B. Outside female body
C. In the male body
D. Outside male body

Answer 1

The full and irreversible fusion of male and female gametes is fertilization or syngamy to form the zygote. In the case of sexual reproduction, it happens only because there is no creation of gametes in the asexual mode of reproduction.

Complete answer: Depending on the process of the birth of the offspring, fertilization in animals is of two kinds: external fertilization and internal fertilization. External fertilization requires the fusion, e.g. spawning in frogs, of gametes outside the body. Internal fertilization entails the fusion within the parent's body of the male gamete and female gamete. This allows males in the female reproductive tracts to insert their sperm. Various species have different strategies for this. Copulation is the most common procedure involving the transfer of sperm to the female reproductive organ such as the vagina by inserting the male copulatory organ such as the penis.
Internal fertilization is also called syngamy, which takes place within the female body. In any favorable environment, internal fertilization takes place, not limited to 1.
Outside the female body, the fertilization that takes place is external fertilization.

Thus, choice A- In the female body' is the correct answer.

Note: External fertilisation has certain benefits such as reducing the chances of sexually transmitted disease transmission and increasing the population's genetic variance. Internal fertilization is usually seen by animals that are viviparous, oviparous, and ovoviviparous in nature. The created offspring are not genetically identical in sexual reproduction and are known to be a cause of evolution. A greater risk of sexually transmitted infections is one of the drawbacks of sexual reproduction.