Population of different species interacting in an ecosystem
Options
(a) biotic community (b) abiotic community (c) both (a) and (b) (d) community
Correct Answer:
biotic community
Explanation:
No explanation available. Be the first […]
Populations termed r-strategists
Options
(a) have J-shaped growth curve (b) are usually pioneer species (c) have type III survivorship curve (d) all of the above
Correct Answer:
all of the above
Explanation:
No […]
Predation and parasitism are which type of interactions?
Options
(a) (+ , +) (b) (+ , O) (c) (- , -) (d) (+ , -)
Correct Answer:
(+ , -)
Explanation:
No explanation […]
Pyramid of energy in a pond ecosystem is always
Options
(a) inverted (b) upright only (c) irregular (d) linear
Correct Answer:
upright only
Explanation:
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Ratio of natality and mortality of a population expressed in percentage is
Options
(a) vital index (b) growth rate (c) survival rate (d) biotic potential
Correct Answer:
vital index
Explanation:
No explanation available. […]
Rhododendron is characteristic of vegetation of
Options
(a) tropical zone (b) gangetic plains (c) alpine zone (d) mangrove belt
Correct Answer:
alpine zone
Explanation:
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Role of nitrifying bacteria, in niterogen cycle, is to
Options
(a) convert ammonia into nitrates (b) fix atmospheric nitrogen (c) convert ammonia into nitrogen (d) convert amino acids into ammonia
Correct Answer:
convert […]
Roots of higher plants show symbiosis with mycorrhizas for obtaining
Options
(a) sulphates (b) nitrogen (c) phosphates (d) all of these
Correct Answer:
phosphates
Explanation:
No explanation available. Be the first to write […]
Source of energy in an ecosystem is
Options
(a) sun (b) ATP (c) sugar made by plant (d) green plant
Correct Answer:
sun
Explanation:
No explanation available. Be the first to write the […]
Stratification is found in
Options
(a) tropical forest (b) deciduous forest (c) savannah (d) tropical and deciduous forest
Correct Answer:
tropical forest
Explanation:
No explanation available. Be the first to write the explanation […]
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