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प्रश्न
Environment is a broad concept.
विकल्प
True
False
उत्तर
True
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संबंधित प्रश्न
What is the functional unit of the environment comprising of the living and non-living components called?
Which one of the following is not a terrestial ecosystem?
forest, Grassland, Aquarium, Desert
Which of the following is an artificial ecosystem?
(a) pond
(b) crop field
(c) lake
(d) forest
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)
State whether true or false– Flow of nutrients in an ecosystem is unidirectional.
Generally, we do not clean natural ponds or lakes but an aquarium needs periodic cleaning. Why?
Ecosystem may be defined as
___________ are also called Heterotrophs.
_______________ is a chemical factor of abiotic components.
Give scientific reason.
Without the existence of nature, human existence is almost impossible.
Among the following choose the correct option which contains only biodegradable items?
- Wood, paper, PVC
- Paper, seeds, detergent,
- Paper, animal excreta, wood
- Wool, leaves, paper
Which one of the following will undergo fastest bio-degradation?
Explain the following term
Herbivorous
______ are self-nourishing components of the ecosystem.
Pick out the terrestrial ecosystem.
Define – Aquarium.
An example for artificial aquatic ecosystem is ______.
Write the common food chain of a pond ecosystem.
Which are the major producers in an aquatic ecosystem?
Explain BOD and its effects on aquatic ecosystem.
