Our Environment...

Each successive trophic level has

Which is the best example of interaction of biotic and abiotic factors of ecosystem?

Waste must be separated into ________ and _______.

Which one of the following can be considered as an example of secondary consumer?

In the given food web, an increase in the population of hawks will not result in

Consider the components of a food chain producers $$ \rightarrow\ $$ herbivores $$ \rightarrow\ $$ carnivores $$ \rightarrow\ $$ top carnivores. Eventually what happens to all the energy passed from one element to the next?

Read the following statements carefully:
(I) Energy transfer in the biotic world always proceeds from the autotrophs.
(II) Energy flow in unidirectional.
(III) Energy availability is maximum at the tertiary level.
(IV) There is a loss of energy from one trophic level to the other.

As DDT passes into food chain, the concentration:

Which of the following statements about food chains are correct?
(a) Removal of 80% of tigers resulted in increased growth of vegetation.
(b) Removal of most carnivores resulted in an increased population of deer.
(c) Length of the food chain is limited to 3-4 trophic levels due to energy loss.
(d) Length of the food chain may vary from 2-3 trophic levels.

Read the following statements and choose the correct set of option w.r.t. ecosystem.
I. Various ecosystems are interconnected by the flow of energy and the transfer of materials.
II. It is a self-sustained and self-regulated segment of nature.
III. Energy flow is always cyclic while the flow of nutrients is unidirectional.
IV. Density of the ecosystem is governed by the degree of biogeochemical cycling and the amount of nutrients.