Available Answers

1. 1.

   Tick (√) the correct answer:

   1. Which of the following animals has its body covered with a hard shell?
      1. Snails
      2. Fish
      3. Birds
      4. None of these
   2. ________________ percent mass of human body in water.
      1. 50
      2. 60
      3. 70
      4. 100
   3. The ________________ layer of the clear liquid is the supernatant layer.
      1. top
      2. middle
      3. low
      4. bottom
   4. The best soil for cultivation of jute plant is:
      1. red soil
      2. black soil
      3. alluvial soil
      4. all of these
   5. Which of the following is magnetic
      1. iron
      2. rubber
      3. sodium
      4. glass
   6. Growth in living being is
      1. a physical change
      2. a chemical change
      3. a slow change
      4. a fast change
   7. Which one of the following is not a pollinating agent?
      1. Bat
      2. Humming bird
      3. Butterfly
      4. Cat
   8. The spines of a cactus plant are modified
      1. flowers
      2. stems
      3. leaves
      4. roots
2. 2.

   Fill in the blanks:

   1. ____________ type of skeleton is present in earthworms.
   2. Lion is a ____________ because it eats meat only.
   3. ____________ helps in blood clotting.
   4. Banana leaves have ____________ venation.
   5. ____________ change cannot be easily carried out in reverse direction.
   6. In the kitchen, the grains are cleaned by ____________.
   7. ____________ and ____________ are animal fibres.
   8. Materials which have special shine on them are known as to be ____________.
3. 3.

   Write 'T' for true and 'F' for false:

   1. Birds do not have backbone.
   2. Coffee is obtained from coffee seeds.
   3. Roots provide food to the plant.
   4. Children up to 10 to 12 years need 40 g protein and 70 g fats.
   5. Solution of salt in water can be separated by filtration.
   6. Handles of utensils should be made up of metals.
   7. Tearing of paper is irreversible.
   8. Early man used nylon and polyester for clothing.
4. 4.

   Match the following:

   Column I	Column II
   1. Vitamin A	a. Rickets
   2. Vitamin B	b. Beri-Beri
   3. Vitamin C	c. Bleeding disease
   4. Vitamin D	d. Scurvy
   5. Vitamin K	e. Night blindness

    

5. 5.

   Which kind of skeleton do you find in a snail or a crab?
6. 6.

   Where is sugar mainly obtained from?