Class IX

Number of chromosomes in each cell except gametes in man are
  1. 23
  2. 28
  3. 46
  4. 28
Muscular co-ordination is controlled through
  1. Muscular co-ordination is controlled through
  2. Muscular co-ordination is controlled through
  3. hypothalamus
  4. cerebellum
Neurons
  1. make up nervous tissue
  2. differ in size
  3. differ in shapes
  4. all of these
At intervals, along length, spinal cord
  1. has myelin sheath
  2. has grey matter
  3. gives off spinal nerves
  4. branches off into dendrites
. Innermost layer of eyeball is
  1. iris
  2. retina
  3. retina
  4. pupil
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