Biosphere Quiz 1

The maximum biological magnification of DDT through food web is seen in:

Nitrogen fixation is done by:

The study of relation of animals and plants to their surroundings is called:

The fain factor which determines the balance of nature is:

The largest source of pollution in the world is:

The crop most susceptible to frost is:

Which amongst the following pairs of organisms represents predator - prey relationship?

If all the plants of the World die, all the animals will also die due to shortage of:

Which of the following is biodegradable?

Which of the following terms is used for several individuals of a species living together in a locality?

Which of the following is usually not an air pollutant?

Which of the following fuels causes minimum environmental pollution?

"Green Hose Effect" means:

Which of the following chemicals is responsible for the depletion of ozone layer in the atmosphere?

The most dangerous consequence of excessive deforestation is:

Light emitted by sun reaches earth in:

Uncontrolled industrialisation leads to acid rain. It is mainly contributed by:

Organisms at the base of the food chain are:

A microscopic organism playing a vital role in nitrogen cycle is:

Nutrients are recycled in the atmosphere with the help of certain micro-organisms referred to:

The maximum fixation of solar energy is done by:

Biodegradable wastes can usually be converted into useful substances with the help of:

Which of the following gases is not found free in air?