Important questions with answers.
1. What
does the word biotic and abiotic mean?
Answer: The word biotic means the living component of the environment and the word abiotic means the non-living component of the environment.
Answer: The word biotic means the living component of the environment and the word abiotic means the non-living component of the environment.
2. What
is an Ecosystem?
Answer: The system formed by the interaction of all living organisms with each other and with the environment in which they live is called an ecosystem.
Answer: The system formed by the interaction of all living organisms with each other and with the environment in which they live is called an ecosystem.
3. What
is Biosphere?
Answer: Biosphere is a narrow zone of the earth where land, water, and air interact with each other to support life.
Answer: Biosphere is a narrow zone of the earth where land, water, and air interact with each other to support life.
4. What
are the two major components of the biotic environment?
Answer: The two major components of the biotic environment are animals and plants.
Answer: The two major components of the biotic environment are animals and plants.
5.
Give reasons.
(a) Man modifies his environment.
Answer:
Man modifies his environment to satisfy his never-ending needs. He cut down
trees to obtain firewood, to make furniture, etc which creates ecological
imbalance. Man destroys the natural environment to lead a comfortable and
artificial life. Man thus modifies his environment.
(b) Plants and animals depend on each
other.
Answer:
Plants
and animals depend on each other for their survival. Animals inhale oxygen and
exhale carbon dioxide. Plants, on the other hand, give out oxygen and take in
carbon dioxide during the process of photosynthesis.
Moreover,
animals consume plants and the dead remains of animals serve as nutrients for
the plants. Thus plants and animals depend on each other.
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