Biology MCQs

11. Why honey bees are called social insects? (UPSC Prelims 1982)
[A] They visit all flowers to collect nectar
[B] They live in large family groups
[C] They depend for their food upon other insects
[D] They move socially with other insects

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12. 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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13. How many bones are present in healthy adult human being?
[A] 205
[B] 207
[C] 206
[D] 208

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14. What is the scientific name of sea fan?
[A] Psittaciformes
[B] Pavo cristatus
[C] Alcyonacea
[D] Corvus

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15. Which of the following is the subject matter of genetics?
[A] Forms and features of plant parts
[B] Heredity and variations
[C] the disorder of living beings
[D] None of these

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16. The study of cell biology is related to which of the following?
[A] the cell is the fundamental unit of life
[B] cell structure and function
[C] Both 1 & 2
[D] None of these

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17. The cytoplasmic membrane of which of the following organisms contains sterols?
[A] Clostridum
[B] Proteus
[C] Mycoplasma
[D] Bacillius

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18. Where are sexual reproduction and mobile cells absent?
[A] Chlorophyceae
[B] Rhodophyceae
[C] Myxophyceae
[D] Phaeophyceae

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19. The energy gained during aerobic respiration is how many times more than that of anaerobic respiration?
[A] 8
[B] 12
[C] 19
[D] 32

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20. In anaerobic respiration, glucose is broken down into what?
[A] ethyl alcohol
[B] carbon dioxide
[C] energy
[D] All of the above

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