Food Chains, Food Web, Productivity and Energy Flow

Give an account of flow energy in an ecosystem.

Write an essay on the productivity of an ecosystem.

If the body mass of a tertiary carnivore is 10 KJ, and if the photosynthetic organisms which provide food for it utilise 20% of their produce in their catabolism, what will be the GPP taking into consideration 10% law.

Describe different types of food chain that exist in an ecosystem.

Measurement of biomass in terms of dry weight is more accurate. Justify.

Can you work out the number of trophic levels at which human beings can function in a food chain?

Define ecological pyramids and describe with examples, pyramids of numbers and biomass.

What is primary productivity? Give a brief description of the factors that affect primary productivity.

Write a note on DFC. Give its significance in a terrestrial ecosystem.

Give examples for GFCs with three, four and five trophic levels. Explain the parasitic food chain. How does it differ from GFC?

Write a short note on the various trophic levels in a typical ecosystem.

Explain GFC.

Define decomposition and describe the process and products of decomposition.

Discuss the factors that influence the process of decomposition.

Explain the terms saprotrophs, detritivores and mineralisers.

Discuss the main reason for the low productivity of ocean.

How is the second law of thermodynamics applicable to the functional part of an ecosystem?

What are the ecological limitations for ecological pyramids?

In GFCs, the number of trophic levels is restricted. Give reason.

Distinguish between primary and secondary productivity.