In the following food chain, 20,000 J of energy was available to the plants. How much energy would be available to man in this chain?Plants® Sheep®& Man

Academic Biology NCERT Class 10

If 20,000 J of energy was available to the plans from the sun, 200J energy will be available to man in the food chain according to 10 percent law.

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Updated on: 20-Mar-2023

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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 → Goat → Lion
If the energy transferred to a tertiary consumer in a food chain is 10 J, how much energy was available to the primary consumer?(a) 100 J (b) 500 J (c) 1000 J (d) 5000 J
If the energy available at the producer level in a food chain is 150 J, how much energy will be transferred to: tertiary consumer?(a) 15 J (b) 10 J (c) 1.50 J (d) 0.15 J
(a) How is energy introduced into the ecosystem?(b) Consider the following food chain :(i) Plants → Mice → Snakes → Hawks(ii) Plants → Mice →HawksIf 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.
(a) Name and state the law given by Lindeman which tells us how much energy entering a particular trophic level of organisms is available for trasnsfer to the next higher trophic level.(b) How much energy will be available to hawks in the food chain comprising hawk, snake, paddy, and mice, if 10,000 J of energy is available to paddy from the sun?
(a) Explain why, a food chain usually cannot have more than three or 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 → Zooplankton → Fish → Big fish
(a) Name two biodegradable and two non-biodegradable wastes.(b) Name the biotic and abiotic components of ecosystem. (c) What is the role of decomposers in the ecosystem? (d) If the plants get 10000 J of energy from the sun, how much energy will be available to tiger in the following food chain?
What percentage of energy available at the producer level is transferred at successive trophic levels in a food chain?
The following is a food chain that ends with human :plants → bee → human(a) Explain how plants provide food for bees.(b) How do bees provide food for humans?(c) How does this food chain differ form a usual food chain involving human such as: plants → goat → human?(d) Do you think that the food chain given in this question can really be regarded as a food chain? Explain your answer.
Construct a food chain comprising the following : Snakes, Hawk, Rats, Plants
Construct (a) a long food chain, and (b) a short food chain, ending with man.
In the food chain given below, if the amount of energy available at fourth trophic level is 5 kJ, what was the energy available at the producer level?Grass → Grasshopper → Frog → Snake → Hawk(a) 500 kJ (b) 50 kJ (c) 5000 kJ (d) 5 kJ
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.
Construct A Terrestrial Food Chain Comprising Four Trophic Levels. (b) What Will Happen If We Kill All the Organisms in One Trophic Level? (c) Calculate The Amount of Energy Available to The Organisms at The Fourth Trophic Level If the Energy Available to The Organisms at The Second Trophic Level Is 2000 J.
What is meant by trophic level in a food chain? Construct a terrestrial food chain with four trophic levels. The energy flow in a food chain is always unidirectional. Why?

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