262990
In soil dark coloured amorphours substance is humus this is : [NCERT - NC-II-208]
1 Highly suitable for microbial action and undergoes decomposition very fast
2 Highly resistant for microbial action and undergoes decomposition very slow
3 Non colloidal
4 Not having minerals.
Explanation:
b Humification leads to accumulation of a dark coloured amorphous substance called humus that is highly resistant to microbial action and undergoes decomposition at an extremely slow rate.
Ecosystem
262993
When a sparrow eats an insect it is : [NCERT - NC-II-210]
1 Primary consumer
2 Secondary consumer
3 Tertiary consumer
4 Quartinary consumer
Explanation:
b A given species may occupy more than one trophic level in the same ecosystem at the same time; for example, a sparrow is a primary consumer when it eats seeds, fruits, peas, and a secondary consumer when it eats insects and worms.
Ecosystem
262995
Which is correct statement regarding pyramid of energy : [NCERT - NC-II-213]
1 It is rarely inverted
2 It is inverted in tree ecosystem
3 It is inverted in desert ecosystem
4 It is never inverted.
Explanation:
d Pyramid of energy is always upright, can never be inverted, because when energy flows from a particular trophic level to the next trophic level, some energy is always lost as heat at each step. Each bar in the energy pyramid indicates the amount of energy present at each trophic level in a given time or annually per unit area.
Ecosystem
262996
Which is a correct statement : [NCERT - NC-II-213]
1 In most ecosystems all the pyramids, of number of energy and biomass are upright
2 Pyramid of numbers is inverted in a tree ecosystem
3 Pyramid of biomass is generally inverted in sea
4 All are correct
Explanation:
d In most ecosystems, all the pyramids, of number, of energy and biomass are upright, i.e., producers are more in number and biomass than the herbivores, and herbivores are more in number and biomass than the carnivores. Also energy at a lower trophic level is always more than at a higher level.
262990
In soil dark coloured amorphours substance is humus this is : [NCERT - NC-II-208]
1 Highly suitable for microbial action and undergoes decomposition very fast
2 Highly resistant for microbial action and undergoes decomposition very slow
3 Non colloidal
4 Not having minerals.
Explanation:
b Humification leads to accumulation of a dark coloured amorphous substance called humus that is highly resistant to microbial action and undergoes decomposition at an extremely slow rate.
Ecosystem
262993
When a sparrow eats an insect it is : [NCERT - NC-II-210]
1 Primary consumer
2 Secondary consumer
3 Tertiary consumer
4 Quartinary consumer
Explanation:
b A given species may occupy more than one trophic level in the same ecosystem at the same time; for example, a sparrow is a primary consumer when it eats seeds, fruits, peas, and a secondary consumer when it eats insects and worms.
Ecosystem
262995
Which is correct statement regarding pyramid of energy : [NCERT - NC-II-213]
1 It is rarely inverted
2 It is inverted in tree ecosystem
3 It is inverted in desert ecosystem
4 It is never inverted.
Explanation:
d Pyramid of energy is always upright, can never be inverted, because when energy flows from a particular trophic level to the next trophic level, some energy is always lost as heat at each step. Each bar in the energy pyramid indicates the amount of energy present at each trophic level in a given time or annually per unit area.
Ecosystem
262996
Which is a correct statement : [NCERT - NC-II-213]
1 In most ecosystems all the pyramids, of number of energy and biomass are upright
2 Pyramid of numbers is inverted in a tree ecosystem
3 Pyramid of biomass is generally inverted in sea
4 All are correct
Explanation:
d In most ecosystems, all the pyramids, of number, of energy and biomass are upright, i.e., producers are more in number and biomass than the herbivores, and herbivores are more in number and biomass than the carnivores. Also energy at a lower trophic level is always more than at a higher level.
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Ecosystem
262990
In soil dark coloured amorphours substance is humus this is : [NCERT - NC-II-208]
1 Highly suitable for microbial action and undergoes decomposition very fast
2 Highly resistant for microbial action and undergoes decomposition very slow
3 Non colloidal
4 Not having minerals.
Explanation:
b Humification leads to accumulation of a dark coloured amorphous substance called humus that is highly resistant to microbial action and undergoes decomposition at an extremely slow rate.
Ecosystem
262993
When a sparrow eats an insect it is : [NCERT - NC-II-210]
1 Primary consumer
2 Secondary consumer
3 Tertiary consumer
4 Quartinary consumer
Explanation:
b A given species may occupy more than one trophic level in the same ecosystem at the same time; for example, a sparrow is a primary consumer when it eats seeds, fruits, peas, and a secondary consumer when it eats insects and worms.
Ecosystem
262995
Which is correct statement regarding pyramid of energy : [NCERT - NC-II-213]
1 It is rarely inverted
2 It is inverted in tree ecosystem
3 It is inverted in desert ecosystem
4 It is never inverted.
Explanation:
d Pyramid of energy is always upright, can never be inverted, because when energy flows from a particular trophic level to the next trophic level, some energy is always lost as heat at each step. Each bar in the energy pyramid indicates the amount of energy present at each trophic level in a given time or annually per unit area.
Ecosystem
262996
Which is a correct statement : [NCERT - NC-II-213]
1 In most ecosystems all the pyramids, of number of energy and biomass are upright
2 Pyramid of numbers is inverted in a tree ecosystem
3 Pyramid of biomass is generally inverted in sea
4 All are correct
Explanation:
d In most ecosystems, all the pyramids, of number, of energy and biomass are upright, i.e., producers are more in number and biomass than the herbivores, and herbivores are more in number and biomass than the carnivores. Also energy at a lower trophic level is always more than at a higher level.
262990
In soil dark coloured amorphours substance is humus this is : [NCERT - NC-II-208]
1 Highly suitable for microbial action and undergoes decomposition very fast
2 Highly resistant for microbial action and undergoes decomposition very slow
3 Non colloidal
4 Not having minerals.
Explanation:
b Humification leads to accumulation of a dark coloured amorphous substance called humus that is highly resistant to microbial action and undergoes decomposition at an extremely slow rate.
Ecosystem
262993
When a sparrow eats an insect it is : [NCERT - NC-II-210]
1 Primary consumer
2 Secondary consumer
3 Tertiary consumer
4 Quartinary consumer
Explanation:
b A given species may occupy more than one trophic level in the same ecosystem at the same time; for example, a sparrow is a primary consumer when it eats seeds, fruits, peas, and a secondary consumer when it eats insects and worms.
Ecosystem
262995
Which is correct statement regarding pyramid of energy : [NCERT - NC-II-213]
1 It is rarely inverted
2 It is inverted in tree ecosystem
3 It is inverted in desert ecosystem
4 It is never inverted.
Explanation:
d Pyramid of energy is always upright, can never be inverted, because when energy flows from a particular trophic level to the next trophic level, some energy is always lost as heat at each step. Each bar in the energy pyramid indicates the amount of energy present at each trophic level in a given time or annually per unit area.
Ecosystem
262996
Which is a correct statement : [NCERT - NC-II-213]
1 In most ecosystems all the pyramids, of number of energy and biomass are upright
2 Pyramid of numbers is inverted in a tree ecosystem
3 Pyramid of biomass is generally inverted in sea
4 All are correct
Explanation:
d In most ecosystems, all the pyramids, of number, of energy and biomass are upright, i.e., producers are more in number and biomass than the herbivores, and herbivores are more in number and biomass than the carnivores. Also energy at a lower trophic level is always more than at a higher level.