Class IX

Nervous control acts through
  1. impulses transmitted by neuron
  2. hormones transported by blood
  3. leukocytes in blood
  4. thrombocytes
Hydrogen peroxide (H2O2)
  1. helps line up cell proteins
  2. is poisonous to tissues
  3. is often needed as a catalyst
  4. aids in oxidation of glucose
Offsprings receive valuable qualities from both parents in
  1. cross pollination
  2. self pollination
  3. insect pollination
  4. wind pollination
When an artery dilates
  1. lumen becomes constricted
  2. lumen gets wider
  3. person may appear pale
  4. elastic muscles become ineffective
Fungi have
  1. an efficient digestive system
  2. extracellular digestion
  3. vasoconstriction
  4. ventral root
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LKG - 12th

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