Class IX

To facilitate entry of CO2 in leaf is done through stomata as well as through water film on the
  1. upper epidermis
  2. lower epidermis
  3. spongy mesophyll cells
  4. spongy mesophyll cells
Glottis is a
  1. gut
  2. tube
  3. cavity
  4. slit-like opening
Number of chromosomes in each cell except gametes in man are
  1. 23
  2. 28
  3. 46
  4. 28
Cells change their shape and structure as they are pushed outwards, these cells are found in
  1. malpighian layer
  2. dermis
  3. cornified layer
  4. granular layer
Hindbrain is made up of
  1. Cerebrum
  2. pituitary gland
  3. Medulla Oblongata
  4. hypothalamus
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