Read the following statements about menstrual cycle and select 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 fertilization occurs, corpus luteum degenerates immediately.

(i) and (ii)

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(ii) and (iii)

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(i) and (iii)

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(ii) and (iv)

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Solution

The correct option is C (i) and (iii)
(i) and (iii) are correct
(ii) The changes in the ovary and the uterus are induced by changes in the level of both ovarian (estrogen and progesterone) and pituitary (FSH and LH) hormones.
(iv) Corpus luteum degenerates when there is no fertilization.

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Similar questions

Q. Some important events that occur during the menstrual cycle are given below. Arrange the events in a proper sequence and select the correct option.
(i) Proliferation of endometrial wall
(ii) LH surge
(iii) Secretion of estrogen
(iv) Secretion of progesterone
(v) Ovulation
(vi) Growth of corpus luteum
(vi) Degeneration of corpus luteum
(vii) Menstruation

Read the following statements and mark the correct option.
Statement-1 : Lack of menstruation may be indicative of pregnancy.
Statement-2 : Menstruation only occurs if the released ovum is fertilized.

Match the hormones with the event they control in menstrual cycle

i. FSH a. ovulation

ii. LH b. surge of LH

iii.Progesterone c. Development of ovarian follicle

iv. Oestrogen d. maintenance of pregnancy

Match the hormones with the event they control in menstrual cycle

\begin{matrix} Column I & Column II i. FSH & a. ovulation ii. LH & b. surge of LH iii. Progesterone & c. Development of ovarian follicle iv. Oestrogen & d. maintenance of pregnancy \end{matrix}

Q. Which of the following statements are correct with respect to hormones involved in the reproductive cycle of human females?
a. Both LH and FSH attain a peak level in the middle of cycle.
b. Estrogen is essential for the maintenance of the endometrium.
c. Uterine endometrium proliferates in presence of ovarian hormone.
d. LH surge induces rupture of Graafian follicle.
[0.7 mark]

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The correct option is C (i) and (iii)(i) and (iii) are correct (ii) The changes in the ovary and the uterus are induced by changes in the level of both ovarian (estrogen and progesterone) and pituitary (FSH and LH) hormones. (iv) Corpus luteum degenerates when there is no fertilization.

The correct option is C (i) and (iii)
(i) and (iii) are correct
(ii) The changes in the ovary and the uterus are induced by changes in the level of both ovarian (estrogen and progesterone) and pituitary (FSH and LH) hormones.
(iv) Corpus luteum degenerates when there is no fertilization.