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प्रश्न
Complete the concept map.
उत्तर
संबंधित प्रश्न
In an ecosystem, 10% of energy available for transfer from one trophic level to the next is in the form of ______.
In an ecosystem :
(i) the flow of energy is unidirectional
(ii) the flow of materials is unidirectional
(iii) the flow of materials is cyclic
(iv) the flow of energy is cyclic.
(a) (i) and (ii)
(b) (ii) and (iii)
(c) (i) and (iv)
(d) (i) and (iii)
If frog population in paddy fields declines all of a sudden,
a) What will be the effect on paddy crop?
b) Number of which consumers will decline and which will increase?
c) Name the Indian states where paddy is cultivated on a large scale.
In a food chain autotrophic plants are present at the _______ level.
Give my information
Ecosystem
Define the following term and give two examples.
Autotrophs
Natural water bodies are not regularly cleaned whereas an aquarium needs regular cleaning. Why?
A: Heterotrophs do not produce their own food.
R: They depend on autotrophs for their nourishment.
Write a paragraph on the functions of an ecosystem.
The Pacific ocean is an example of an marine ecosystem.
Define ecosystem.
A healthy ecosystem provides ______.
______ are self-nourishing components of the ecosystem.
Consumers are those that depend on directly (or) indirectly are called ______.
Pick out the terrestrial ecosystem.
Ecosystem originated without human intervention is called ______.
Analogy:
Natural terrestrial ecosystem: Forest:: Artificial terrestrial ecosystem: ______.
An ecosystem includes
In an ecosystem, the 10% of energy available for transfer from one trophic level to the next is in the form of
