Biology MCQs

31. Which one of the following is a cartilaginous fish?
[A] Silver fish
[B] Dog fish
[C] Cray fish
[D] Star fish

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32. The hippocampus (sea horse) belongs to the class?
[A] Agnatha
[B] Chondrichtyes
[C] Osteichthyes
[D] Mammalia

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33. Which of the following were lizard-like reptiles?
[A] Ichthyopterygia
[B] Lepidosauria
[C] Archosauria
[D] Synapsida

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34. Where do reptiles lay eggs?
[A] in the water
[B] in the mud underwater
[C] on land
[D] in a tree

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35. Which of the following layer of skin provides a waterproof barrier and forms our skin tone?
[A] epidermis
[B] dermis
[C] hypodermis
[D] None of these

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36. Which of the following makes bones so strong?
[A] Silica
[B] Cartilage
[C] Blood and marrow
[D] Calcium and phosphorous

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37. Consider the following stages of the menstrual cycle:

  1. Menstruation
  2. Follicular phase
  3. Ovulation
  4. Luteal phase

Which of the following is the correct order of the menstrual cycle stages?

[A] 1, 2, 3, 4
[B] 2, 1, 3, 4
[C] 1, 2, 4, 3
[D] 2, 3, 1, 4

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38. Which of the following microorganism causes a bacterial disease in a poultry farm?
[A] Ascaridia galli
[B] Mycobacterium avium
[C] Eimeria
[D] Paramyxovirus

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39. Which of the following is not among Mendel’s laws of inheritance?
[A] Law of Dominance
[B] Law of multiple allele traits
[C] Law of Segregation
[D] Law of Independent Assortment

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40. Which vein brings clean blood from the lungs into the heart?
[A] Vena Cava
[B] Pulmonary Vein
[C] Hepatic Vein
[D] Renal Vein

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