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The sex chromosome in a human ovum is ______.
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Name any two resources which come under pressure due to the rising population.
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What is the significance of the testes being located in scrotal sacs outside the abdomen?
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The hormone that affects urination is ______.
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A zygote which has Y chromosome inherited from the father will develop into a ______.
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Match the items given in Column I with the most appropriate ones in Column II and rewrite the correct matching pairs:
| Column I | Column II | ||
| (a) | Leydig Cells | 1. | Lack of thyroxine in children |
| (b) | Stoma | 2. | 12 pairs |
| (c) | Ova | 3. | Testosterone |
| (d) | Cranial nerve | 4. | Diffusion of respiratory gases |
| (e) | Cretinism | 5. | Haploid cells |
| 6. | 31 Pairs | ||
| 7. | Diploid cells |
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Assertion (A): We urinate more in summer.
Reason (R): Sweat glands are more active in summer.
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Expand the abbreviation ADH.
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What is the significance of Testes being placed in Scrotal sacs?
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The given statement is incorrect. Rewrite the correct statement:
Seminiferous tubules secrete Testosterone.
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The new cells are to be produced for all except:
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The correct sequence of phases in interphase is ______.
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Given below is a set of four term. Choose the odd one and write the category of the remaining term:
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Given below is a set of four term. Choose the odd one and write the category of the remaining term:
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Coal and iron are inexhaustible resources.
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Petroleum is a resource of the same category as that of ______.
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List any three consequences of high population density.
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What was directly responsible for the rapid rise of world population in the twentieth century?
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Which of the following is not a non-conventional source of energy?
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Which of the following is an exhaustible source of energy?
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