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Given below is a labelled diagram of the mammary gland, of which some parts are labelled as A, B, C and D.
Based on these labels, choose the part that contains the cluster of cells which secrete milk.
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Important Questions on Human Reproduction
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Match the months listed in Column - I write the organogenesis of foetus in Column - II.
| Column - I | Column - II | ||
| (i) | First month | (a) | Separation of eye lids |
| (ii) | Second month | (b) | Hairs on head |
| (iii) | Fifth month | (c) | Heart |
| (iv) | Six month | (d) | limbs and Digits |
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Assertion (A): Generally, a woman does not conceive during the lactation period
Reason (R): The hormone 'Prolactin' initiates and maintains lactation in a delivered woman
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Match the following columns and select the correct option:-
| Column-I | Column-II | ||
| (a) | Ovary | (i) | Human chorionic gonadotropin |
| (b) | Placenta | (ii) | Estrogen & Progesterone |
| (c) | Corpus luteum | (iii) | Androgens |
| (d) | Leydig cells | (iv) | Progesterone only |
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Reason (R): Placenta of man is described as haemo endothelial placenta
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| (I) | Yolk sac placenta |
| (II) | Chorioallantoic placenta |
| (III) | Zonary placenta |
| (IV) | Discoidal placenta |
| (V) | Haemochorial placenta |
| (VI) | Indeciduate placenta |
| (VII) | Deciduate placenta |
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