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Algae is

  • Unicellular
  • Colonial
  • Filamentous
  • All of above
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1. Plants absorb dissolved nitrates from soil and convert them into :

  • Free nitrogen
  • Urea
  • Proteins
  • Ammonia

2. Phloem tissue is found in ?

  • Plants
  • Insects
  • Mammals
  • All of above

3. Pigmentation of skin is due to :

  • leucocytes
  • lymphocytes
  • monocytes
  • melanocytes

4. White blood corpuscles are used by our body ?

  • to carry oxygen
  • to dissolve protiens
  • to combat infection
  • to help liver work

5. Which is responsible for the process of cell division ?

  • mitosis
  • heterosis
  • fusion
  • fission
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