Biology MCQs

31. Renin is released from juxtaglomerular (JG) cells when?
[A] blood flow in the glomerulus increases
[B] blood flow in the glomerulus decreases
[C] blood flow in the glomerulus remains neutral
[D] None of these

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32. Which of the following is an accessory reproductive gland in male mammals?
[A] Inguinal gland
[B] Prostate gland
[C] Mushroom-shaped gland
[D] Gastric gland

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33. In which form does Plasmodium enter the human body?
[A] Phanerozoites
[B] Cryptozoites
[C] Gametocytes
[D] Sporozoites

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34. The development of a fruit without fertilization is called ____:
[A] Apomixis
[B] Parthenocarpy
[C] Hybridogenesis
[D] Gametogamy

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35. ___ is the study of the physical form and external structure of plants:
[A] Physiology
[B] Anatomy
[C] Phytomorphology
[D] Cytology

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36. The colour change in the Chameleon is due to the presence of ____:
[A] Chromatophore
[B] Haemoglobin
[C] Chlorophyll
[D] Pneumatophore

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37. Which of the following creatures is oviparous?
[A] Frog
[B] Rabbit
[C] Mouse
[D] Squirrel

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38. The vector of disease sleeping sickness is ____:
[A] Sand fly
[B] House fly
[C] Fruit fly
[D] Tsetse fly

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39. Which of the following plant pigments absorbs in red and far red region of light?
[A] Phytochrome
[B] Cryptochrome
[C] Carotenoide
[D] Chlorophyll

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40. Which of the following animals has the longest life span?
[A] Dog
[B] Elephant
[C] Crocodile
[D] Tortoise

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