MCQ-2: Organisms and their Environment

Which organisms do not get their energy by eating other organisms?

A single tree is food for a large population of caterpillars. Several small birds eat the caterpillars. The small birds are eaten by a bird of prey.
Which is the pyramid of biomass?

The diagram shows part of the carbon cycle.
Which letter represents photosynthesis?

The diagram shows part of the water cycle.

How is water lost from the tree?

Rabbits eat grass and foxes eat rabbits.
What would cause the highest increase in the number of rabbits?

The diagram shows two pyramids based on food chains in which the producer is a large tree.

What do the two pyramids represent?

The diagram shows a food chain.
rice plant → caterpillar → song bird → hawk
How many decomposers are shown in this food chain?

The numbers in the diagram below show the amount of energy, in kJ, transferred through a part of an ecosystem.

How much energy, in kJ, is transferred from herbivores to carnivores?

The diagram shows part of the carbon cycle without the arrows.
Which labelled line should have an arrow head on its lower end?

The diagram shows what happens to the energy that enters the atmosphere from the Sun.

How much of the Sun’s energy is not used for photosynthesis?

The diagram shows a food chain.

If the carnivores in trophic level 3 suddenly die out as a result of disease, in which trophic levels will the number of organisms be likely to decrease?

The surface waters of the ocean contain a population of microscopic plants.
Which factor would result in fewer of these plants?

By which process does water enter the atmosphere?

The diagram shows part of the carbon cycle.
Which labelled arrow represents photosynthesis?

The diagram shows the water cycle.
Which letter represents transpiration?

What can be continuously recycled in ecosystems?

Which diagram shows a pyramid of biomass for a woodland?

Which of the following is an example of a food chain?

The diagram shows the movements of water between oceans, land and the air. The figures are based on an annual mean precipitation of 100 units.

What is the total of evaporation from the land and transpiration from plants at X?

What is shown in the diagram?