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Botany Questions and Answers

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146. The blue green algae are
 
  • A. photo heterotrophs
  • B. chemo autotrophs
  • C. photo autotrophs
  • D. chemo heterotrophs
 
147. How many types of cell division are there in plant cells?
 
  • A. 1
  • B. 2
  • C. 3
  • D. 4
 
148. Oncogene is responsible for
 
  • A. Aids
  • B. typhoid
  • C. cancer
  • D. malaria
 
 
149. The maximum absorption of water by root occur in
 
  • A. cortex
  • B. root hairs
  • C. cell
  • D. root cap
 
150. When the soil is rich in organic debris, it is known as
 
  • A. clayey soil
  • B. loam soil
  • C. organic soil
  • D. humus soil