Practice free Human Reproduction (Zoology) NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
Which phase of the menstrual cycle is characterized by the regeneration of the uterine endometrium through proliferation?
During the follicular phase, 'simultaneously the endometrium of uterus regenerates through proliferation.' (Refer to paragraph 2, page 34).
Which hormone primarily induces the rupture of the Graafian follicle and subsequent ovulation?
Rapid secretion of LH leading to its maximum level during the mid-cycle, called the LH surge, induces rupture of Graafian follicle and thereby the release of ovum (ovulation). (Refer to paragraph 1, page 35).
What is the primary function of the corpus luteum during the luteal phase?
The corpus luteum secretes large amounts of progesterone, which is essential for maintaining the endometrium for potential implantation. (Refer to paragraph 1, page 35).
What causes the disintegration of the endometrium, leading to menstruation, in the absence of fertilization?
In the absence of fertilisation, the corpus luteum degenerates. This causes disintegration of the endometrium leading to menstruation, marking a new cycle. (Refer to paragraph 1, page 35).
What is the term for the cessation of menstrual cycles around 50 years of age in human females?
In human beings, menstrual cycles cease around 50 years of age; that is termed as menopause. (Refer to paragraph 1, page 35).
During which phase of the menstrual cycle do both LH and FSH attain a peak level?
Both LH and FSH attain a peak level in the middle of cycle (about 14th day). (Refer to paragraph 1, page 35).
Which of the following is essential for the maintenance of the endometrium, particularly for implantation of a fertilized ovum?
The corpus luteum secretes large amounts of progesterone which is essential for maintenance of the endometrium. Such an endometrium is necessary for implantation of the fertilised ovum and other events of pregnancy. (Refer to paragraph 1, page 35).
What is the primary event that defines the ovulatory phase?
The Graafian follicle now ruptures to release the secondary oocyte (ovum) from the ovary by the process called ovulation. (Refer to paragraph 2, page 33).
The reproductive cycle in female primates is known as the:
The reproductive cycle in the female primates (e.g. monkeys, apes and human beings) is called menstrual cycle. (Refer to paragraph 3, page 33).
What is the term for the first menstruation, which begins at puberty?
The first menstruation begins at puberty and is called menarche. (Refer to paragraph 3, page 33).
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