1. Carnivores occupy the second trophic level in the food chain.
Answer
Correction-Carnivores occupy the third trophic level in the food chain because the second level is occupied by herbivores. Herbivores are organisms who feed on plants. Carnivorous feed upon these Herbivorous animals therefore carnivores occupy the next level after herbivores.
2. The flow of nutrients in an ecosystem is considered to be a ‘one way’ transport.
Answer
Correction-The flow of nutrients in an ecosystem is considered to be cyclic. The continuous transfer of nutrients which are necessary for the growth of organisms occurs from abiotic to biotic factors and biotic to abiotic factors in an ecosystem.
By photosynthesis green plants convert minerals and inorganic compounds into glucose. This food is transferred along with food chain from producers to primary consumers to secondary consumers. The decomposers of the ecosystem decompose all the dead and decaying organisms and return these nutrients back to the ecosystem. Thus, the flow of nutrients is cyclic and not one way transport.
3. Plants in an ecosystem are called primary consumers.
Answer
Correction-Plants in an ecosystem are called producers. Plants are autotrophs, they carried out photosynthesis with the help of solar energy and produce food. This food is utilized by other organisms. Other herbivorous organisms are dependent on the food produce by plant to meet their nutritional requirements. Therefore herbivorous are primary consumer and plants are producer
