Available Answers

1. 1.

   Name the following:

   1. The component of air required for respiration by plants and animals.
   2. Forests that are found along the equator between the Tropics of Cancer and Capricorn.
   3. The plants that are found in an area.
   4. The forests that contain trees that shed all their leaves once a year.
   5. An animal found in boreal forests.
2. 2.

   Name the following:

   1. The living components of an ecosystem.
   2. The organisms that depend directly on plants for their food and energy.
   3. The animals which feed on both plants and animals.
   4. The relationship between two organisms such that one organism benefits, sometimes, at the expense of the other.
   5. The forests that are found along the equator between the Tropics of Cancer and Capricorn.
3. 3.

    Give two examples of the following.

   1. Abiotic components of an ecosystem.
   2. Plants found in tropical rainforest.
   3. Animals found in temperate forests.
   4. Plants found in temperate deciduous forests.
   5. Plants found in temperate evergreen forests.
   6. Animals found in boreal forests.
4. 4.

   Write T for True and F for False. Correct the False statements.

   1. Scavengers and decomposers are also biotic components of an ecosystem.
   2. Omnivores are animals that feed on the dead bodies of animals.
   3. Decomposers help keep the environment clean and bring about recycling of nutrients.
   4. The energy flow along a food chain, and the number of individuals at each level, gradually decreases as we go higher up.
   5. Rhizobium converts nitrogen from the atmosphere into simple compöünds which are easily absorbable by the roots of grasses.
5. 5.

   Choose the correct option to fill in the blank.

   1. Plants absorb ____________ (solar/chemical)  energy and convert it into ____________ (solar/chemical) energy.
   2. ____________ (Primary/Secondary) consumers consists of animals that feed on plants.
   3. ____________(Tapeworm/Rhizobium) live in the gut and derive nutrition from man.
   4. ____________ (Camels/Seals) live in the desert, whereas ____________ (camels/seals) live in freezing conditions.
   5. Woody climbers called ____________ (ebony/vines) climb on tees to reach the sunight.
   6. Temperate _____________ (deciduous/evergreen) forests contain trees that shed all their.
6. 6.

   Decomposers help keep the environment clean. Give reasons.