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 […]
Symbiosis is shown by
Options
(a) Cuscuta (b) E. coil (c) Rafflesia (d) Monotropa
Correct Answer:
E. coil
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
The 10% energy transfer law in a food chain was proposed by
Options
(a) Tansley (b) Lindeman (c) Kormondy (d) Ambust
Correct Answer:
Lindeman
Explanation:
No explanation available. Be the first to write […]
The abundance of a species population, within its habitat is called
Options
(a) relative density (b) niche density (c) absolute density (d) regional density
Correct Answer:
niche density
Explanation:
No explanation available. Be […]
The carrying capacity of a population is determined by its
Options
(a) limiting resource (b) birth rate (c) death rate (d) all of these
Correct Answer:
limiting resource
Explanation:
No explanation available. Be […]
The communities of primary succession are called as
Options
(a) sub-sere (b) mesosere (c) pioneer sere (d) none of these
Correct Answer:
pioneer sere
Explanation:
No explanation available. Be the first to write […]
The concept that ‘population tends to increase geometrically while food supply increases arithmetically’ was put forward by
Options
(a) Stuart Mill (b) Chrales Darwin (c) Adam Smith (d) Thomas Malthus
Correct Answer:
Thomas […]
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