choose the correct answer
Answers
Answer:
4) Bacteria
5) Plants, animals, decomposers
1. Which of the following is a decomposer?
a) Tiger
b) Deer
c) Bacteria
d) Grass
Answer -: c) Bacteria, are decomposers. Decomposers are those organisms that obtain nutrients that are essential for survival from other dead plants or animals.
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2. Which of the following groups consists of biotic factors?
a) Air, water, light
b) Plants, animals, microorganisms
c) Light, plants, water
d) Animals, plants, soil
Answer -: b) Plants, animals and microorganisms are groups consisting of biotic factors. Biotic Factors are those groups that consist of the living component of the environment.
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3. Fill in the blanks.
(i) Animals are also known as consumers or heterotrophs.
(ii) A food web is formed of interconnected food chains.
(iii) The study of ecosystem is known as ecology.
(iv) Mistletoe is a parasitic plant.
(v) The organism that lives off another organism is known as parasite.
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4. State whether the following are true or false.
(i) The earth is a very hot planet.
Answer -: False
(ii) The sun is the primary source of energy.
Answer -: True
(iii) A deer is a secondary consumer.
Answer -: False, a deer is a primary consumer.
(iv) Water and soil are abiotic components of environment.
Answer -: True
(v) Head lice share a symbiotic relationship with human beings.
Answer -: True
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