How much joules of energy will be receved by vulture in the chain of three living beings-vulture,snakes and paddy,sun provides 10,000 J energy to paddy.

(a) Explain why, a food chain usually cannot have more than three of four steps. (b) Calculate the amount of energy that will be available to big fish in the following food chain, if 10,000 J of energy is available to small algae from the sun : Small algae to Zooplankton to Fish to Big fish

A forest ecosystem having a lot of green plants has some foxes, lions and rabbits in it . (a) Write a food chain comprising all the four organisms mentioned above. (b) Name (i) one herbivore, and (ii) two carnivores, in this food chain. (c) Name the link which is a predator as well as a prey. (d) Name (i) second trophic level, and (ii) third trophic level. (e) Which link of this food chain can feed on second trophic level as well as third trophic level, independently ? (f) If the sun provides 1000 J of energy to the plants, then how much energy will be transferred to fox through the food chain.

(a) Name an ideal pyramid existing in an ecosystem. Construct it up to its three trophic levels along with their names. (b) The sun provides 1,000,000 J of sunlight (solar energy) to an ecosystem. Write the amount of energy that is available to the first and third trophic levels, respectively.

A person trying to lose weight by burning fat filts a mass of 10 kg upto a being of 1m 1000 time . Assume that the potential energy lost each time be lower the mass is dissipated . How much far will be use up considering the work done only when the weight is lifted up ? Far supplies 3.8 xx 10^(7) J of energy per kg wich is canverted to mechanical energy with x 20 % efficiency rate Take = 9.8 ms^(-2)

(a) How is energy introduced into the ecosystem ? (b) Consider the following food chains : (i) Plants to Mice to Snakes to Hawks (ii) Plants to Mice to Hawks If energy available at the producer level in both the food chains is 100 J, in which case will hawks get more energy as food and by how much ? Justify your answer.

How much mass is converted into energy per second in the sun if this power output is 3.6 xx10^(27) W ?

If 5 joules of energy is available at producer level (plants), then how much energy will be transferred to the lion in the following food chain ? Plants to Goat to Lion