Class IX

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