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Standard XII
Biology
Ducts of the Reproductive System
Which of the ...
Question

Which of the following is correctly matched

A
GH – Controls BMR
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B
FSH – Stimulates spermatogenesis
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C
Oxytocin – Brings about ovulation
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D
Relaxin – Stimulates lactation
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Solution

The correct option is B FSH – Stimulates spermatogenesis
GH or growth hormone regulates overall growth of body. FSH is follicle stimulating hormone. It stimulates growth of ovarian follicles and their secretion of oestrogens in female,and spermatogenesis (formation of sperm) in the male. LH is responsible for ovulation. Oxytocin helps in childbirth and milk ejection. Relaxin stimulates uterine contraction during childbirth. Prolactin is responsible for lactation.

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Q. Below are the hormones of pituitary glands with their functions that are mismatched.
a) Adrenocorticotropic hormone
b) Thyroid stimulating hormone
c) Prolactin
d) Follicle stimulating hormone
e) Luteinizing hormone
f) Oxytocin

(i) Controls growth of gonads
(ii) Controls menstrual cycle and ovulation
(iii) Stimulates thyroid gland
(iv) Stimulates milk production
(v) Contracts uterus during parturition
(vi) Stimulates adrenal gland

Match the above correctly and find out the correct option.

Q. Match the columns and find out the correct combination
AOxytocin(i)Stimulates ovulation
BProlactin(ii)Implantation and maintanance of pregnancy
CLH(iii)Uterine muscle contraction
DProgesterone(iv)Lactation

Q. Which of the following pairs is/are correctly matched ?
Gland Hormones
1. PituitaryFollicle stimulating hormone
2. Thyroid Somatotropic hormone
3. ParathyroidThyroxine

Q. Refer to the given schematic representation of menstrual cycle showing three phases I, II and Ill.
Select the option that correctly matches these phases with the following events.

(i) FSH secreted by the anterior pituitary stimulates the ovarian follicle to secrete estrogen which stimulates the proliferation of the endometrium.

(ii) LH secreted by the anterior pituitary stimulates the development of corpus luteum which secretes progesterone.

(iii) Reduced production of LH from anterior pituitary causes degeneration of corpus luteum, thereby progesterone production is reduced.

931827_de2f7796e9414e94a8b8722f2db36224.JPG
Q. Select the answer which correctly matches the endocrine gland with the hormone it secretes and its function/ deficiency symptom.
Endocrine glandHormoneFunction/ deficiency symptoms
(A) Anterior pituitaryOxytocin Stimulates uterus contraction during child birth
(B) Posterior pituitaryGrowth Hormone(GH)Over-secretion stimulates abnormal growth
(C) Thyroid glandThyroxineLack of iodine in diet results in goitre
(D) Corpus luteumTestosteroneStimulates spermatogenesis

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