Class XI

Pairs of spinal nerves in man can be as many as
  1. 21
  2. 31
  3. 41
  4. 51
In fungi, enzyme protease digests proteins into
  1. peptones
  2. amino acids
  3. substrate
  4. sugars
Rate of heat lost depends upon the
  1. amount of fatty issues in a body
  2. amount of muscular tissue in body
  3. number of sweat glands under skin
  4. amount of heavy work done
Organisms capable to convert radiant energy in chemical energy are
  1. plants
  2. animals
  3. microbes
  4. all of these
Sperms are developed at a temperature
  1. lower than body
  2. higher than body
  3. equal to body temperature
  4. dependent on pressure
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