Which one of the following is the food chain operating in ponds, lakes or sea?
Options
(a) grass → insects → frog → birds (b) alge(phytoplanktons) → small animals (zooplanktons) → fish → […]
Who coined the term ecosystem?
Options
(a) Ernst Haeckel (b) Charles Elton (c) E. P. Odum (d) A. G. Tansley
Correct Answer:
A. G. Tansley
Explanation:
No explanation available. Be the first to […]
Who stated that a population is a self regulating system?
Options
(a) Wynne Edward (b) T.R. Malthus (c) Lamarck (d) Darwin
Correct Answer:
T.R. Malthus
Explanation:
No explanation available. Be the first to […]
The zone of atmosphere in which the ozone layer is:
Options
(a) Ionosphere (b) Mesosphere (c) Stratosphere (d) Troposphere
Correct Answer:
Stratosphere
Explanation:
No explanation available. Be the first to write the explanation […]
Just as a person moving from Delhi to Shimla to escape the heat for the duration of hot summer, thousands of migratory birds from Siberia and other extremely cold northern regions move to:
Options […]
If 20 J of energy is trapped at producer level, then how much energy will be available to peacock as food in the following chain? plant → mice → snake → peacock
Options
Vertical distribution of different species occupying different levels in a biotic community is known as:
Options
(a) Stratification (b) Zonation (c) Pyramid (d) Divergence
Correct Answer:
Stratification
Explanation:
Stratification is the occurrence of vertical […]
The mass of living material at a trophic level at a particular time is called :
Options
(a) Standing state (b) Net primary productivity (c) Standing crop (d) Gross primary productivity
Correct Answer: […]
Secondary Succession takes place on/in:
Options
(a) Degraded forest (b) Newly created pond (c) Newly cooled lava (d) Bare rock
Correct Answer:
Degraded forest
Explanation:
No explanation available. Be the first to write […]
Rachel Carson’s famous book “Silent Spring” is related to :
Options
(a) Noise pollution (b) Population explosion (c) Ecosystem management (d) Pesticide pollution
Correct Answer:
Pesticide pollution
Explanation:
Rachel Carson’s book ‘Silent spring’ reveals […]
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