Consider the following statements and select the option which correctly identifies true (T) and false (F) ones.
(i) Reproductive life of woman lasts from menarche to menopause.
(ii) In females, the uterus wall thickens to receive the embryo.
(iii) Estrogen is released by testes at the onset of puberty.
(iv) Hormones secreted by adrenal glands stimulate testes and ovaries to produce their hormones.
(I)
(II)
(III)
(IV)
A
T
F
T
F
B
T
F
F
F
C
T
T
F
F
D
T
T
F
T
(i) Reproductive life of woman lasts from menarche to menopause.
(ii) In females, the uterus wall thickens to receive the embryo.
(iii) Estrogen is released by testes at the onset of puberty.
(iv) Hormones secreted by adrenal glands stimulate testes and ovaries to produce their hormones.
Important Questions on Reproduction and Endocrine System
The given figure represents the location of various endocrine glands in the human body. Identify the glands marked as P, Q, R, S and T and select the incorrect statement regarding these.
Statement 1: In human male, testes lie outside the abdominal cavity in a thin pouch called scrotum.
Statement 2 : Scrotum helps in maintaining the low temperature of the testes necessary for spermatogenesis.
(i) It is developed wholly in a test tube.
(ii) It is developed through tissue culture method.
(iii) The ovum is fertilised externally and thereafter implanted in the uterus.
(iv) It develops from an unfertilised egg.
Which of the following is correct about the part labelled X?
(i) Silk moth
(ii) Snake
(iii) Frog
(iv) Hen
(v) Butterfly
(vi) Human
(vii) Cat
(viii) Cockroach
(ix) Whale
(x) Dog
Read the given paragraph, where few words have been italicised.
The pineal gland secretes the hormone progesterone which helps to regulate sleep patterns. Thyroid glands release hormones that regulate the level of calcium in the blood with the help of calcitonin which is produced in the parathyroid glands.
Select the correct option regarding the given paragraph.
(i) Positions of pineal and parathyroid should be interchanged.
(ii) Progesterone should be replaced by melatonin.
(iii) Parathyroid should not be replaced as it is correctly mentioned.
(iv) Positions of progesterone and calcitonin should be interchanged.
(v) Positions of thyroid and parathyroid should be interchanged.
