Distinguish between

Grazing food chain and detritus food chain

(a) The graph given below represents the organisms’ response to temperature as an environmental condition.

(i) Which one of the two lines represents conformers and why?

(ii) What does the other line in the graph represent and why?

(b) Mention the different adaptations the parasites have evolved with, to be able to successfully complete their life cycles in their hosts.

OR

Draw the pyramids of biomass in sea and in a forest. Explain giving reasons why are the two pyramids different?

The following diagrams are the age pyramids of different populations. Comment on the status of these populations.

What are the shortcomings of ecological pyramids in the study of ecosystem?

Poaching of tiger is a burning issue in today's world. What implication would this activity have on the functioning of the ecosystem of which the tigers are an integral part?

Fill in the trophic levels (1, 2, 3 and 4) in the boxes provided in the figure.