Available Answers

1. 1.

   Choose the correct option.

   1. Which of these is an animal product?
      1. Egg
      2. Honey
      3. Milk
      4. All of these
   2. These organisms feed on dead plants and animals.
      1. Herbivores
      2. Decomposers
      3. Amphibians
      4. Carnivores
   3. Calcium, magnesium, sodium, potassium are examples of
      1. macrominerals
      2. trace minerals
      3. fibres
      4. none of these
   4. This method is used to separate grains from the stalks.
      1. Winnowing
      2. Threshing
      3. Sieving
      4. None of these
   5. The solution in which no more of the solute can be dissolved.
      1. Saturated solution
      2. Unsaturated solution
      3. Condensation solution
      4. None of these
   6. The process of making yarn from fibre is called
      1. weaving
      2. knitting
      3. spinning
      4. ginning
   7. The property of metals is used for making jewellery and other decorative articles.
      1. Roughness
      2. Opaque
      3. Transparency
      4. Lustre
   8. The interconversions of the three physical states of water are examples of change.
      1. irreversible
      2. reversible
      3. chemical
      4. All of these
   9. A single-cell organism is called
      1. multicellular organism
      2. unicellular organism
      3. heterotrophs
      4. None of these
   10. Animals that do not have a backbone are called
       1. vertebrates
       2. predators
       3. invertebrates
       4. none of these
   S A M P L E

   www.bigslate.com

   Answer:

   S A M P L E

   1. (d) All of these
   2. (b) Decomposers
   3. (a) Macrominerals
   4. (b) Threshin
   5. (a) Saturated solutio...
   6. ...
   7. ...
   8. ...
   9. ...
   10. ...
2. 2.

   Write one word for the following.

   1. Animals that feed on only dead animals
   2. Iron, zinc, and copper are examples of these minerals
   3. The process of separating cotton fibres from its seeds
   4. The outer covering of a seed
   5. An animal that eats the flesh of other animals
   S A M P L E

   www.bigslate.com

   Answer:

   S A M P L E

   1. Scavengers
   2. Trace minerals
   3. Ginning
   4. Seed coat
   5. Carnivore
3. 3.

   Write T for the true statement and F for the false one. Correct the false  statement(s).

   1. Zebra is a common animal found in rainforests.
   2. Growth is a part of respiration.
   3. Wood is a bad conductor of electricity.
   4. Blowing a balloon is a physical, and irreversible change.
   5. Tissue is the smallest living structure that is able to function independently.
   S A M P L E

   www.bigslate.com

   Answer:

   S A M P L E

   1. F Zebra is found in savannahs, not rainforests
   2. F Growth is a
   3. ...
   4. F Blowing a...
   5. ...
4. 4.

   Differentiate between herbivores and carnivores with the help pf examples.

5. 5.

   Differentiate between fat-soluble vitamins and water-soluble vitamins.

6. 6.

   What is winnowing?