Our Environment...

The ____________ constitute the fourth trophic level.

From autotrophs, the energy goes to _________ and then finally to __________.

A group of interbreeding individuals forms

____________ is/are the abiotic component(s) of a pond ecosystem.

Which of the following substances is not recycled in nature?

Which of the following is not a component of an ecosystem?

The organisms which consume both plant and animal products are known as

____________ is not an example of ecosystem.

In which trophic level are herbivores found?

Which of the following ecosystems is natural?

The excessive richness of nutrients in a lake or some other body of water, frequently due to run-off from the land, is called

Organisms in an area interact with the non-living constituents of the environment to form a/an

Man belongs to the ____________ category of consumers.

Which of the following organisms can synthesise their food by the process of photosynthesis?

The trophic levels represent the steps in a/an

Which of the following are phytoplanktons?

Which of the following is a primary consumer?

In which of the following positions can a tiger be placed in a food chain?

The lowest level of organisation is

The sequence of living organisms in a community, in which one organism consumes another with the transfer of food energy, is known as

Which of the following options does not belong to higher level of organisation?

Which of the following chemicals is/are linked with the depletion of ozone in the atmosphere?

Which of the following animals can be a tertiary consumer?

The plants are placed in the ____ trophic level in a food chain or in an ecological pyramid.

Which of the following optoions are the the very minute or microscopic organisms freely floating on the surface of water in a pond?

Top carnivores feed upon

Which of the following options is not represented by an ecological pyramid?

What is the position of grass in a food chain?

Which of the following statements is true?

How many oxygen atoms are present in an ozone molecule?

What is the type of energy flow in an ecosystem?

If 15,000 calories of the energy possessed by plants, then how many kilocalories of energy will be transferred to the herbivores?

Which of the following do not contribute to environmental degradation?

What percentage of the solar energy fallen on the leaves is utilised by the plants for the process of photosynthesis?

When the trophic level in an ecological pyramid increases, the number of living organisms

What percentage of energy present at one trophic level is passed on to the next trophic level?

Which of the following statements is not inferred from the ecological pyramid?

____________ is/are the ultimate source of energy.

The ozone layer protects Earth from the ____________ of the sun.

The ____________ fix up the solar energy and make it available in a food chain.