consider the given food chains given below i)Plants -->rats->snakes-->hawks (ii)Plants->rats->hawks. If energy available at producer level is these food chains 100 J In which case , will hawk get more energy as food and by what factor? Justify your answer .

Construct the food chain comprising the following Snakes, Hawks, Rats , Plants.

In the context of energy which level of food chain is considered beneficial for us?why?

if plants get 20,000 J of energy from sun,how much enrgy will be available to lion in the following food chain?calculate.

A diagrammatic representation of different trophic levels in an ecosystem is given below What is the difference between a food chain and food web? Which one is more stable?

Consider the following statements concerning food chains. Which two of these statements are correct? (a) Removal of 80% tigers from an area resulted in greatly increased growth of vegetation. (b) Removal of most of the carnivores resulted in an increased population of deer. (c) The length of food chains is generally limited 3-4 trophic levels due to energy loss. (d) The length of food chains may very from 2 to 8 trophic levels.

Given below is a list of autographs and heterotrophs . With your knowledge about food chain, establish various linkages between the organisms on the principle of eating and being eaten. What is the inter-linkage established known as ? Algae , hydrilla, grasshopper, rat, squirrel, crow, maize plant, deer, rabbit, lizard, wolf snake, peacock, phytoplankton, crustaceans, whale, tiger, lion, sparrow, duck, crane cockroach, spider, toad, fish, leopard, elephant, goat, nympaea, Spirogyra.