NEET BIOLOGY

Detailed explanation-1: -Fertilization is defined as the union of two gametes. During fertilization, sperm and egg fuse to form a diploid zygote to initiate prenatal development. In mammals, fertilization involves multiple ordered steps, including the acrosome reaction, zona pellucida penetration, sperm–egg attachment, and membrane fusion.

Detailed explanation-2: -Two parents are needed in sexual reproduction . During this process the nuclei of the male and female gametes are fused in order to create a zygote . This process is known as fertilisation.

Detailed explanation-3: -Anisogamy is the fusion of two gametes that are dissimilar in size. Isogamy is the fusion of gametes that are similar in size. Oogamy is the fusion of a large non-motile gamete with a small motile gamete. All these are types of syngamy(fertilization). Zoogamy is the sexual reproduction of animals.