EASY
10th CBSE
IMPORTANT
Earn 100
What are trophic levels ? Why are autotrophs considered to be at the first trophic level of all food chains ? State the reason for limited number of trophic levels in nature.
Important Questions on Our Environment
EASY
10th CBSE
IMPORTANT
Draw a diagram showing flow of energy from solar input to a food chain having four trophic levels in an ecosystem. List two inference that can be drawn from the energy flow diagram.
EASY
10th CBSE
IMPORTANT
In 1987, the United Nations Environment Programme (UNEP) forged an agreement to freeze the production of a certain chemical to the year 1986 level. Name the chemical and the manufacturing companies in which this chemical was being mostly used. In what way does this chemical damages the organisms on the Earth?
HARD
10th CBSE
IMPORTANT
Use of several pesticides which results in excessive accumulation of pesticides in rivers of ponds, is a matter of deep concern. Justify this statement.
HARD
10th CBSE
IMPORTANT
Write one difference between biodegradable and non-biodegradable wastes. List two impacts of each type of the accumulated waste on environment if not disposed off properly.
EASY
10th CBSE
IMPORTANT
"Although gardens are created by man, but they are considered to be an ecosystem." Justify this statement.
MEDIUM
10th CBSE
IMPORTANT
Study the given figure of a food web and identify the primary consumer in the food web:
EASY
10th CBSE
IMPORTANT
Write the percentage of solar energy captured by the autotrophs in a food chain.
EASY
10th CBSE
IMPORTANT
Write the percentage of energy transferred from autotrophs to the next level in a food chain.
