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Human pregnancy shows three prominent trimesters. Answer the following question based on these trimester.
- What is morning sickness during the first trimester?
- Name the hormone secreted in the second trimester.
- The organ which secretes hormone in second trimester is
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Write a note on human placenta.
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Match the respiratory surfaces to the organisms in which they are found.
| Organ/ cells | Hormones | ||
| (i) | Corpus luteum | (a) | HCG |
| (ii) | Leydig's cells | (b) | Estrogen |
| (iii) | Placenta | (c) | Progesterone |
| (iv) | Graafian follicle | (d) | Testosterone |
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Explain the process of parturition.
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Definition and importance of Parturition
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Answer the following question.
Explain the steps of parturition.
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Answer the following question.
Which hormones are involved in parturition?
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Name the enzyme secreted by the prostate gland.
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Identify the parts labelled in the given diagram.

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Explain the process of parturition.
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Name the three stages of parturition.
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Add a note on lactation.
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Give the fate of mesoderm.
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Describe three devices by which cross-pollination is encouraged in angiosperms by avoiding self- pollination.
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Short answer question.
What is colostrum?
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Explain any two contrivances or outbreeding devices for pollination.
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What is dichogamy?
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What does IUCD indicate?
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Differentiate between the following:
Spermatogenesis and oogenesis
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Answer the following question.
What are the goals of RCH programme.
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