Available Answers

1. 1.

   Study the food chain. Fill in the boxes 1 - 4 with words from the list.

   Producers

   Secondary consumers

   Primary consumers

   Decomposers

   1. The arrow after Box 4 represents some materials. What are these called?
   2. Why are these materials shown going back to Box 1?

   

2. 2.

   Multiple Choice Questions (MCQs)

   1. Which of the following is a non-living part of the environment?
      1. Animals
      2. Soil
      3. Bacteria
      4. Plants
   2. Plants depend on animals for:
      1. Food
      2. Oxygen
      3. Carbon dioxide
      4. Shelter
   3. Scavengers are:
      1. Producers
      2. primary consumers
      3. Secondary consumers
      4. Decomposers
   4. Which of these is a secondary consumer?
      1. Grass
      2. Cow
      3. Snake
      4. Giraffe
   5. Which of these food chains is correct?
      1. Grass → Goat → Tiger
      2. Tiger → Goat → Grass
      3. Goat → Grass → Tiger
      4. Grass → Tiger → Goat
   6. Which of these human activities upset the balance in nature?
      1. Cutting down forests
      2. Hunting wild animals
      3. Setting up factories that release harmful gases
      4. All of these
   7. Which of these is good for the environment?
      1. Afforestation
      2. Deforestation
      3. Global warming
      4. All of these
3. 3.

   Put √ for true, and Χ for false.

   1. Living things are dependent on non-living and other living things.
   2. Interdependence in nature means that all living things are independent of other living things.
   3. Plants are known as Producers and animals as consumers.
   4. Global warming is good for the environment.
   5. Rainwater harvesting means using rainwater to grow crops.
4. 4.

   Match the columns.

   Column A	Column B
   a. Cow	(i) Primary consumer
   b. Lion	(ii) Decomposer
   c. Vulture	(iii) Scavenger
   d. Fungus	(iv) Extinct
   e. Animal that no longer exists on earth	(v) Secondary consumer

    

5. 5.

   List two ways in which:

   1. Plants depend on animals
   2. Animals depend on plants
6. 6.

   Differentiate between Living and Non-living components of the environment.