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Mark the wrong statement.

61.54% studentsanswered this correctly

Important Questions on Human Reproduction

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The limbs and external genitalia in the foetus are well developed in
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Match the column-I with column-II and choose the correct option:-

  Column-I   Column-II
A. After one month of pregnancy i Major organ system formation
B. End of 2nd  month of pregnancy ii Body covered with fine hairs and eye lashes are formed
C. At end of 12 week of pregnancy iii Embryo heart formation
D. End of second trimester iv Foetus develops limbs and digits
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Study the following, : 
A. Testosterone influences the male secondary sexual characters.
B. Gestation period in rabbit is approximately 276 days.
C. Bulbourethral glands secrete a vaginal lubricant.
D. Placenta secretes oestrogen.
The correct answer is
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How many of the given hormones are secreted by the placenta?

hCG, hPL, progesterone, oxytocin, estrogen, prolactin, relaxin, cortisol

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The given figure shows a diagrammatic sketch of a portion of human male reproductive system.
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Identify the parts labelled as A, B, C and D and select the correct option.
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The given diagram refers to the T.S. of testis showing a sectional view of a few seminiferous tubules. Identify the parts labeled A-D and select the correct option.

Question Bank for 12th Class Biology Human Reproduction MCQs - Human  Reproduction - Studyadda.com

 

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Read the following statements about the given diagram carefully and state which of them are correct.
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(i) A carries urine and sperms.
(ii) B secretes a fluid that helps in the lubrication of the penis.
(iii) D produces testosterone but not sperms.
(iv) C stores sperms.
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Given below are the three statements each with two blanks. Select the option which correctly, fills up the blank in any two statements.

(a) Each seminiferous tubule is lined on its inside by two types of cells called____(i)___and ____(ii)____.
(b) The seminiferous tubules open into the ____(i)____ through _____(ii)______.
(c) The enlarged end of penis called the _______(i)_____ is covered by a loose fold of skin called the _______(ii)_______.