Niche is a specific part of the habitat that is determined by the functioning of the population like shelter, type of food, season etc.

Correct Option: A

Niche is a specific part of the habitat that is determined by the functioning of the population like shelter, type of food, season etc.

Pyramid of numbers in a grassland ecosystem is always upright. For most ecosystem, like grass land ecosystem. Pyramids of numbers are upright because numbering of organisms decrease at successively higher trophic levels. Trophic level refers to the organisms, position in the food chain.

Correct Option: B

Pyramid of numbers in a grassland ecosystem is always upright. For most ecosystem, like grass land ecosystem. Pyramids of numbers are upright because numbering of organisms decrease at successively higher trophic levels. Trophic level refers to the organisms, position in the food chain.

In a biotic community the herbivores (goat, deer) are those animals, which consume the primary producers (green plants). Hence they are primary consumers.

Correct Option: D

In a biotic community the herbivores (goat, deer) are those animals, which consume the primary producers (green plants). Hence they are primary consumers.

Energy pyramid cannot be inverted because energy always flows in one direction only. According to 10% law of energy transfer given by Lindemann (1972), during transfer of energy from one trophic level to other there is always loss of energy in respiration and other activities. Only 10% of energy is transfered to net trophic level. So the amount of energy flow decreases with successive trophic levels.

Correct Option: C

Energy pyramid cannot be inverted because energy always flows in one direction only. According to 10% law of energy transfer given by Lindemann (1972), during transfer of energy from one trophic level to other there is always loss of energy in respiration and other activities. Only 10% of energy is transfered to net trophic level. So the amount of energy flow decreases with successive trophic levels.

Only 10% of the mass is flown from one trophic level to another in the form of energy.

Correct Option: B

Only 10% of the mass is flown from one trophic level to another in the form of energy.