UPSC 2002 › Science & Technology › Biology
9 questions · 2002 · answers as per the UPSC key
Among living organisms,
which one of the following is the most responsible factor for bringing about the origin of a new species?
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Ticks and mites are actually
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With reference to the blood in a normal person, which one of the following statements is correct?
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Consider the following plants:
- Bougainvillea
- Carnations
- Cocoa
- Grapes
Which of these plants are propagated by stem cuttings?
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In the context of the organic evolution, the loss of limbs of snakes is explained by the phenomenon of
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With reference to the human body, consider the following statements:
- The production of somatotropin goes up when a person exercises.
- Men’s testes produce progesterone.
- Women’s adrenal glands secrete testosterone.
- Stress causes the adrenals to release very little cortisol compared to usual.
Which of these statements are correct?
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In a bisexual flower, if androecium and gynaecium mature at different times, the phenomenon is known as
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Which one of the following statements is correct?
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Assertion (A): Drinking of whisky increases the frequency of urination.
Reason (R): Alcohol intake speeds up the secretion of vasopressin in the body.