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Test: Menstrual Cycle (NCERT) - NEET MCQ


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15 Questions MCQ Test Biology Class 12 - Test: Menstrual Cycle (NCERT)

Test: Menstrual Cycle (NCERT) for NEET 2024 is part of Biology Class 12 preparation. The Test: Menstrual Cycle (NCERT) questions and answers have been prepared according to the NEET exam syllabus.The Test: Menstrual Cycle (NCERT) MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Menstrual Cycle (NCERT) below.
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Test: Menstrual Cycle (NCERT) - Question 1

During which phase of the menstrual cycle does the endometrium become thick and glandular? 

Detailed Solution for Test: Menstrual Cycle (NCERT) - Question 1

In the luteal phase of the menstrual cycle, following ovulation, the corpus luteum forms and secretes progesterone. Progesterone causes the endometrium to become thick, glandular, and vascular, preparing it for potential implantation of a fertilized egg.

Test: Menstrual Cycle (NCERT) - Question 2

Read the following statements about menstrual cycle and select two correct statements.
(i) Lack of menstruation may be indicative of pregnancy.
(ii) The changes in the ovary and the uterus are induced by changes in the levels of ovarian hormones only.
(iii) LH surge induces ovulation.
(iv) If fertilisation occurs, corpus luteum degenerates immediately.

Detailed Solution for Test: Menstrual Cycle (NCERT) - Question 2

Lack of menstruation may be indicative of pregnancy. During pregnancy, the levels of estrogen and progesterone are high in the blood, which are required for the maintenance of uterus and thus, menstruation does not occur. On 14th day of the menstrual cycle, there is rapid increase in LH (called LH surge), that induces ovulation. The changes in the ovary and the uterus are induced by changes in the levels of ovarian hormones and pituitary hormones. If fertilisation occurs, corpus luteum degenerates by 16th week of pregnancy.

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Test: Menstrual Cycle (NCERT) - Question 3

During bleeding phase of menstrual cycle unfertilised secondary oocyte undergoes autolysis. The interplay of hormones then is

Detailed Solution for Test: Menstrual Cycle (NCERT) - Question 3

If fertilisation does not occur, the secondary oocyte undergoes autolysis and progesterone (secreted by persistent corpus luteum) inhibits the release of LH from pituitary. Reduction of LH level causes regression of corpus luteum by autolysis and thus fall in the progesterone level in the blood. Due to deficiency of progesterone, uterine lining sloughs off causing bleeding. This whole phase is called bleeding phase.

Test: Menstrual Cycle (NCERT) - Question 4

Below is given the unorganised list of some important events in the human female reproductive cycle. Identify the correct sequence of these events and select the correct option.
(i) Secretion of FSH
(ii) Growth of corpus luteum
(iii) Growth of the follicle
(iv) Ovulation
(v) Sudden increase in the levels of LH

Detailed Solution for Test: Menstrual Cycle (NCERT) - Question 4

During the follicular phase, the secretion of FSH happens and this leads to the development of a mature follicle (Graafian follicle). This process of formation of a mature female gamete is called oogenesis. The FSH level increase causes the development of follicles and secretion of estrogen by the growing follicles. Rapid secretion of LH leads to the rupture of Graafian follicle and release of ovum called ovulation. This phase is followed by the remaining parts of Graafian follicle transform into the corpus luteum. 

So, the correct option is '(i) →→ (iii) →→ (v) →→ (iv) →→ (ii)'.

Test: Menstrual Cycle (NCERT) - Question 5

Name the hormone that has no role in menstruation.

Detailed Solution for Test: Menstrual Cycle (NCERT) - Question 5

TSH or thyroid stimulating hormone has no role in menstruation.

Test: Menstrual Cycle (NCERT) - Question 6

The time for optimum chances of conception in a woman is_________starting from the day of menstruation.

Detailed Solution for Test: Menstrual Cycle (NCERT) - Question 6

On the 14th day of menstrual cycle, ovulation occurs, so chances of conception are optimum.

Test: Menstrual Cycle (NCERT) - Question 7

Menstrual flow occurs due to shedding of?

Detailed Solution for Test: Menstrual Cycle (NCERT) - Question 7

Menstrual flow occurs due to shedding of the endometrium, which is the inner lining of the uterus.

Test: Menstrual Cycle (NCERT) - Question 8

Withdrawal of which of the following hormones is the immediate cause of menstruation?

Detailed Solution for Test: Menstrual Cycle (NCERT) - Question 8

Progesterone is required for the maintenance of the endometrial lining of the uterus. As soon as the production of progesterone is reduced due to reduction in the production of LH from anterior lobe of the pituitary, the endometrium of the uterus breaks down and menstruation begins.

Test: Menstrual Cycle (NCERT) - Question 9

If mammalian ovum fails to get fertilized, which one of the following is unlikely?

Detailed Solution for Test: Menstrual Cycle (NCERT) - Question 9

Progesterone suspends ovulation during pregnancy, maintains foetal connection with the uterine wall and controls development of foetus in the uterus.

If fertilization fails, means no pregnancy so progesterone level decreases to restart the process of ovulation.

So, the correct answer is 'Progesterone secretion rapidly increases'.

Test: Menstrual Cycle (NCERT) - Question 10

Cessation of menstrual cycle in a woman is called

Detailed Solution for Test: Menstrual Cycle (NCERT) - Question 10

Menopause is a phase occurring between the age of 45 to 55 years in woman's life when ovulation and menstruation stop. during menopause, the level of estrogen in the blood decrease. Thus, estrogen can go longer inhibit the production of FSH and LH. therefore, FSH and LH (mainly FSH) are produced after menopause in large quantities and these (mainly FSH) are excreted out in urine.

Test: Menstrual Cycle (NCERT) - Question 11

Repair of endometrium is undertaken by

Detailed Solution for Test: Menstrual Cycle (NCERT) - Question 11

Estrogen secreted from ovarian follicles under the influence of FSH, causes proliferation of the endometrium of the uterine wall.

Test: Menstrual Cycle (NCERT) - Question 12

For human female which of the following is incorrect?

Detailed Solution for Test: Menstrual Cycle (NCERT) - Question 12

During pregnancy, high levels of progesterone inhibits FSH and LH secretion. In absence of these hormones, there is no chance of ovulation and thus no pregnancy.

Test: Menstrual Cycle (NCERT) - Question 13

The accompanying diagram shows the changes that take place in the endometrium during a normal menstrual cycle. Identify the changes and select the correct option.

Detailed Solution for Test: Menstrual Cycle (NCERT) - Question 13

Menstruation occurs for 1−5 days and ovulation occurs on 14th day of a normal menstrual cycle.

Test: Menstrual Cycle (NCERT) - Question 14

Which of the following statements concerning menopause is correct?

Detailed Solution for Test: Menstrual Cycle (NCERT) - Question 14

Follicular atresia means degeneration of follicles. Thus, if all follicles get degenerated at the age of 45-50 years, there will be no ovulation and hence no menstruation which leads to menopause.

Test: Menstrual Cycle (NCERT) - Question 15

Study the graph carefully and correlate the hormone levels on

(i) 1-5 days
(ii) 12-14 days
(iii) 25-28 days (if the ovum is not fertilised).

Detailed Solution for Test: Menstrual Cycle (NCERT) - Question 15

The menstrual cycle is a series of cyclic physiological changes that take place in the female primates. It is regulated by the various hormones like FSH, LH, estrogen, progesterone. The follicle-stimulating hormone stimulates the development of follicles which secretes estrogen. The rise in the level of estrogen stimulates the thickening of the endometrium in the uterus. LH is secreted by the pituitary gland which causes ovulation. The rise in LH level is followed by the rise in the progesterone which is responsible for developing the follicles into corpus luteum. The corpus luteum secretes progesterone which is necessary for the maintenance of the uterus lining for implantation. The rise in progesterone and estrogen results in the decrease of FSH and LH. If there is no pregnancy, then the level of progesterone and estrogen decreases which results in the breaking of the endometrium i.e., menstrual flow. After the start of menstruation, the level of FSH and LH rises to start the new cycle.

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