Class VII

Branches of tall trees look like roof over the other plants in forest called 
  1. Shadow 
  2. Pines 
  3. Canopy 
  4. Conical
Nutrients of dead plants and animals are released into ______.
  1. Air
  2. Water
  3. Plants
  4. Soil
Which of the following serve as green lungs ? 
  1. Green pigment of the plants 
  2. Forests 
  3. Kitchen gardens 
  4. Green house gases 
Which of the following is called dynamic living entity?
  1. Villages
  2. Forests
  3. Oceans
  4. Land
The major by-product of animal lungs is
  1. Oxygen
  2. Carbon dioxide
  3. Nitrogen 
  4. Hydrogen sulphide
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