CBSE
Multiple Choice QuestionsStarting 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
(i) > (ii) > (iii)
(iii) > (ii) > (i)
(ii) > (iii) > (i)
(ii) > (i) > (iii)
Select the correct explanation for the labels A, B, C and D
A represents the fertilised zygote.
B represents the stage of morula formation.
C represents the blastocyst.
D represents the blastocyst implantation
During menstrual cycle, levels of LH and estrogen are highest around
14day
21day
7day
28day
Assertion: A male is found to be lacking facial hair and pubic hair.
Reason: It is a case of hyposecretion of testosterone from Leydig's cells of testes.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Which of the following statements is correct regarding menstrual cycle
LH induces rupturing of Graafian follicle.
Proliferative phase is characterised by the increased production of progesterone.
Corpus luteum secretes large amount of estrogen.
Both LH and FSH attain a peak level in secretory phase.
Hormones for the menstrual cycle are produced by
ovaries only
uterus only
ovaries and uterus
ovaries and anterior pituitary
The 'cells of Rauber' are
secretory cells of endometrium in uterus
inner cell mass of blastocoel
outer cells of trophoblast in contact with uterine wall
cells of trophoblast, in contact with inner cell mass of blastocyst.
Choose the correct statement.
hPL plays a major role in parturition.
Foetus shows movements first time in the 7th month of pregnancy.
Signal for parturition comes from fully developed foetus and placenta.
Embryo's heart is formed by the 2nd month of pregnancy.
Assertion: Parturition is induced by neural signal in maternal pituitary.
Reason: At the end of gestation period, the maternal pituitary releases prolactin which causes uterine contractions.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Which of the following statements is correct regarding menstrual cycle?
LH induces rupturing of Graafian follicle
Proliferative phase is characterised by the increased production of progesterone
Corpus luteum secretes large amount of estrogen
Both LH and FSH attain a peak level in secretory phase
