Class XI

After fertilization, ovule develops into a
  1. Fruit
  2. Seed
  3. Ovule
  4. Funicle
Living organisms can not use
  1. Light energy
  2. Chemical energy
  3. Heat energy
  4. Mechanical energy
Growth of radicle occurs when
  1. Plumule grows
  2. Cotyledons are shed
  3. It pushes testa at micropyle
  4. Plomule erupts out of soil
 Few enlarged alveoli vs. many minute alveoli pose risk of
  1. Production of mucus in air passages
  2. Inefficient exchange of gases
  3. Blood clotting
  4. Dull and insensitive brain
Conversion of fibrinogen to fibrin is carried out through
  1. Thrombin
  2. Prothrombin
  3. Thrombokinase
  4. Platelets
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