Assertion: In a regular medical examination of a small population, a 35 years old lady was found to have higher levels of oestrogens, progesterone in her blood.
Reason : The lady is 12 weeks pregnant.

If both assertion and reason are true and reason is the correct explanation of assertion.

If both assertion and reason are hue but reason is not the correct explanation of assertion.

If assertion is true but reason is false.

If both assertion and reason are false.

Solution

If both assertion and reason are true and reason is the correct explanation of assertion.

Human chorionic gonadotrophin (hCG) hormone is secreted by the trophoblast cells and is assayed during pregnancy test. It helps in maintaining the mother's corpus luteum. Corpus luteum prevents menstruation and ovulations by secreting oestrogens and progesterones.

Around 10^th week of pregnancy, hCG secretion is declined by placenta, menstruation stops and the amount of estrogens and progesterone exceeds the amount secreted by ovaries. High levels of estrogen and progesterone inhibits the level of FSH and LH and prevents ovulation. It also maintains the uterus and prepare it for labor and delivery.

Some More Questions From Reproduction in Organisms Chapter

Which of the following is a cloning vector?

Starting from the maximum, arrange the following male reproductive accessory organs in the correct order, based on the amount of secretion poured into urethra.
(i) Prostrate gland
(ii) Seminal vesicle
(iii) Bulbourethral gland

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Reproduction In Organisms

Some More Questions From Reproduction in Organisms Chapter

Which of the following is a cloning vector?

Starting from the maximum, arrange the following male reproductive accessory organs in the correct order, based on the amount of secretion poured into urethra.
(i) Prostrate gland
(ii) Seminal vesicle
(iii) Bulbourethral gland

Which of the following contraceptive devices make uterus unsuitable for implantation?

Sexual stage (gametocytes) of Plasmodium occurs in

Sporopollenin is a constituent of pollen exine. It can be degraded by the action of

The pollen grains of rice and wheat lose their viability inminutes of their release

After doble fertilization, a mature ovule has

Genetically modified (GM) crops can be produced by

Which of the following is a palindromic sequence?

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

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Email Address

Location

For Daily Free Study Material Join wiredfaculty

Reproduction In Organisms

Some More Questions From Reproduction in Organisms Chapter

Which of the following is a cloning vector?

Starting from the maximum, arrange the following male reproductive accessory organs in the correct order, based on the amount of secretion poured into urethra.(i) Prostrate gland(ii) Seminal vesicle(iii) Bulbourethral gland

Which of the following contraceptive devices make uterus unsuitable for implantation?

Sexual stage (gametocytes) of Plasmodium occurs in

Sporopollenin is a constituent of pollen exine. It can be degraded by the action of

The pollen grains of rice and wheat lose their viability inminutes of their release

After doble fertilization, a mature ovule has

Genetically modified (GM) crops can be produced by

Which of the following is a palindromic sequence?

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Starting from the maximum, arrange the following male reproductive accessory organs in the correct order, based on the amount of secretion poured into urethra.
(i) Prostrate gland
(ii) Seminal vesicle
(iii) Bulbourethral gland