Biology MCQs

11. Which among the following is the characteristic feature of virus? (UPSC Prelims 1989)
[A] It is made of fats
[B] It multiplies only on dead animals
[C] It multiplies only on hosts
[D] It lacks chlorophyll

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12. Which branch of biology is deal with the study of seeds?
[A] Embryology
[B] Spermatology
[C] Gerontology
[D] Histology

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13. Who discovered cell differentiation?
[A] Walther Flemming
[B] Edwin John Butler
[C] Karl Ernst von Baer
[D] Parthasarthy Iyengar

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14. Which of the following organelles is absent in animal cells and present in plant cells?
[A] Cytoplasm
[B] Cell wall
[C] Vacuoles
[D] Mitochondria

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15. Cell theory was formulated by __?
[A] Charles Darwin
[B] Theodor Schwann
[C] Robert Hooke
[D] Robert Koch

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16. Green algae, red algae and brown algae are common examples of__?
[A] Thallophyta
[B] Bryophyta
[C] Pteridophyta
[D] Gymnosperms

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17. The sporophytic generation is represented only by the zygote__?
[A] Funaria
[B] Chlamydomonas
[C] Pinus
[D] Pinus

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18. Covered smut of Sorghum is caused by which of the following?
[A] Sphacelotheca sorghi
[B] Sphacelotheca cruenta
[C] Sphacelotheca reiliana
[D] Tolyposporium ehrenbergii

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19. What are the vegetative parts of a flower?
[A] Sepals
[B] petals
[C] Both 1 & 2
[D] None of these

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20. Drying, wilting, and dropping of leaves of a plant due to insufficient water supply, excessive transpiration, or any vascular disease is called
[A] Guttation
[B] Phyllotaxy

[C] Wilting
[D] Phyllode

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