Biology MCQs

31. Which is also known as the master gland of our body?
[A] Pineal gland
[B] Thyroid gland
[C] Adrenal gland
[D] Pituitary gland

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32. The end of the menstrual cycle is called __.
[A] Menarche
[B] Menopause
[C] Menses
[D] Ovulation

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33. Which of these is not a biological agent that causes disease?
[A] Mycoplasma
[B] Virus
[C] Radiations
[D] Fungi

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34. Which two ideas are included in the definition of biotechnology?
[A] Medical biotechnology and Agricultural biotechnology
[B] Traditional biotechnology and Modern molecular biotechnology
[C] Blue biotechnology and Red biotechnology
[D] Green biotechnology and Animal biotechnology

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35. Some strains of Bacillus thuringiensis can kill certain insects such as __.
[A] Lepidoptera
[B] scorpion
[C] fruit fly
[D] dragonfly

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36. Which one of the following is commonly known as Pond Silk?
[A] Yeast
[B] Rhizopus
[C] Ulothrix
[D] Spirogyra

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37. Solitary cymose inflorescence is observed in ____:
[A] Rose
[B] Tuberose
[C] Chinarose
[D] Gardenia

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38. Activity of an enzyme can be modulated by change of
____:
[A] pH
[B] Light
[C] Humidity
[D] Rainfall

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39. In which of the following animals, is open circulatory system found?
[A] Prawn
[B] Earthworm
[C] Toad
[D] Man

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40. ____ is a straw coloured, viscous fluid constituting nearly 55 per cent of the blood:
[A] Plasma
[B] Formed Elements
[C] Blood Groups
[D] Coagulation of Blood

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