Class IX

Outermost covering in plants is called as
  1. epithelium
  2. mesophyll
  3. lignin
  4. epidermis
Pain and touch receptors are found in
  1. dermis
  2. epidermis
  3. hypodermis
  4. all of these
Chemical reaction occurring inside tissue cells is referred as
  1. excretion
  2. metabolism
  3. respiration
  4. sensation
In hypothalamus, activation of heat gain center results in
  1. vasodilation
  2. rapid breathing
  3. lower metabolic activity
  4. loss of less latent heat
In leaves of grasses and maize,
  1. midrib is absent
  2. petiole is absent
  3. lamina is absent
  4. leaf base is absent
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