Zoology MCQs for NEET — Practice Questions with Answers

The signals for parturition (childbirth) originate from both the fully developed fetus and the placenta. The fetus produces hormones that signal the placenta, which in turn releases hormones to initiate labor.

After delivery, the mammary glands start producing milk, which contains antibodies. These antibodies are crucial for providing immunity to the newborn, helping to protect them from infections and diseases.

The correct matching is:
P-iii: Mons Pubis is a cushion of fatty tissue.
Q-iv: Labia majora surrounds the vulva.
R-ii: Labia Minora are folds of tissue.
S-i: Clitoris is a tiny finger-like structure.

The correct chronology of cell production during spermatogenesis is:
Germinal epithelium → Spermatogonium → Primary Spermatocyte → Secondary Spermatocyte → Spermatids.
This sequence follows the development stages from initial germ cells to the formation of spermatids.

The prostate gland is an accessory reproductive gland in male mammals. It plays a crucial role in producing a fluid that is a component of semen, which helps nourish and transport sperm.

Sperm cells are produced in the seminiferous tubules of the testes. These tubules are lined with Sertoli cells and germ cells, which are responsible for the process of spermatogenesis, the production of sperm.

If after ovulation no pregnancy occurs, the corpus luteum degenerates in a short time. This structure, which forms from the ruptured ovarian follicle, stops producing progesterone, leading to menstruation.

Parturition is the process of delivering the fetus from the uterus through the birth canal. It is the culmination of pregnancy and marks the beginning of the postnatal period. This term specifically refers to the act of childbirth.

Amoeba moves using pseudopodia, which are temporary projections of the cell. Paramecium moves using cilia, which are small hair-like structures that cover its surface. Hydra moves using tentacles, which are flexible, elongated structures.