Q) Nitrogen is fixed in ecosystems in ways stated below. Which one of the statements below is false?
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(D)
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Q) Ptyalin is an enzyme produced in the
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(A)
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Q) Mycobacterium leprae causes leprosy, Corynebacterium diphtheria causes diphtheria and Vibrio comma causes
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(C)
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Q) Biotic component of the environment does not include
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(A)
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Q) Reflex actions are controlled by :
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(B)
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Q) Which one of the following is not an insect:
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(D)
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Q) Which cell organelles are involved in photosynthesis?
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(A)
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Q) It consists of an aqueous ground substance containing a variety of cell organelles and other inclusions such as wastes and storage products.
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(A)
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Q) The study of structures of organisms, their cells and their organelles at molecular level is known as
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(D)
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Q) Who discovered that Malaria was caused by female Anopheles ?
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(D)
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