Biology MCQs

11. Which among the following is the correct sequence of the Levels of Organisation found in living organsims?
[A] Individual – Organ system – Tissue – Cell – Organ
[B] Organ – Organ system – Tissue – Cell – Individual
[C] Tissue – Cell – Organ – Organ system – Individual
[D] Cell – Tissue – Organ – Organ system – Individual.

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12. Which of following is the primary photosynthetic pigment?
[A] Chlorophyll-b
[B] Carotenoid
[C] Chlorophyll-a
[D] Anthocyanin

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13. Who among the following proposed the adage “Survival of the fittest”?
[A] Darwin
[B] Lamarck
[C] William
[D] Huxley

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14. Which of the following clearly define Lichens? (UPSC Prelims 1984)
[A] Algae and fungi
[B] Algae and virus
[C] Fungi and virus
[D] Virus and bacteria

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15. In Mycorrhiza, symbiotic association occurs between which of the following organisms? (UPSC Prelims 1990)
[A] Bacteria and roots of higher plants
[B] Algae and roofs of orchids
[C] Fungi and roots of higher plants
[D] Protozoa and roots of higher plants

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16. It is possible to produce seedless tomato fruits by which of the following processes? (UPSC Prelims 1996)
[A] Applying trace elements in tomato fields
[B] spraying mineral solution on plants
[C] spraying hormones on flowers
[D] applying fertilizers containing radioactive elements

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17. In eye donation, which one of the following parts of donor’s eye is utilized? (UPSC Prelims 1999)
[A] Iris
[B] Lens
[C] Cornea
[D] Retina

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18. Who has introduced Two Kingdom Classification?
[A] Carolus Linnaeus
[B] Ernest Haeckel
[C] Copeland
[D] RH Whittaker

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19. How many bacterial cells are there in the human body?
[A] around 28 trillion
[B] around 38 trillion
[C] around 48 trillion
[D] around 58 trillion

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20. What kind of virus is measles?
[A] enveloped RNA virus
[B] Coronaviridae
[C] tobacco mosaic virus
[D] Npne of these

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