Botany General Knowledge Questions and Answers

17. Cloves, used as a spice are derived from which of the following plant parts?
  A.  Seeds
  B.  Fruits
  C.  Leaves
  D.  Flower buds
Answer
Ans: D
Flower buds
18. The ultimate cause of water movement in a plant stem against gravity is
  A.  Osmosis
  B.  Photosynthesis
  C.  Transpiration
  D.  Diffusion
Answer
Ans: C
Transpiration
19. Commercial agar agar is obtained from
  A.  Porphyro
  B.  Gracilaria
  C.  Chlorella
  D.  Volvox
Answer
Ans: B
Gracilaria
20. Lichens are indicators of
  A.  Air pollution
  B.  Water pollution
  C.  Soil pollution
  D.  Radiation pollution
Answer
Ans: A
Air pollution
1234 5678

Page 5 of 8