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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? - Science

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प्रश्न

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?

थोडक्यात उत्तर
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उत्तर

Ten percent of the energy will be available to hawks.

In this food chain, the energy transfer will take place as follows.

  1. Paddy → Mice→ Snakes →Hawks
                     10 J        1 J         0.1 J
  2. Paddy → 1% energy trap → 100 J of Energy
  3. 10% Law of Energy
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पाठ 5: Our Environment - Exercise 2 [पृष्ठ २४१]

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लखमीर सिंह Biology (Science) [English] Class 10
पाठ 5 Our Environment
Exercise 2 | Q 38.2 | पृष्ठ २४१

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संबंधित प्रश्‍न

Give reason to justify the following: Flow of energy in a food chain is unidirectional.


Why are green plants called producers?


The first trophic level in a food chain is always a green plant. Why ?


"Our food grains such as wheat and rice, the vegetables and fruits and even meat are found to contain varying amounts of pesticide residues." State the reason to explain how and why it happens?


In the following food chain, 100 J of energy is available to the lion. How much energy was available to the producer?

Plants → Deer → Lion


In the following food chain, plants provide 500 J of energy to rats. How much energy will be available to hawks from snakes?

Plants → Rats → Snakes → Hawks
 


The following statement is true or false :
 In biology, human beings are called producers.


Fill in the following blank with suitable word :
Decomposer organisms are..........in their action.


What is the role of decomposers in the ecosystem?


Write down a food chain which ends with humans.


At which trophic level a person is feeding when he is eating bread.


Construct a long food chain.


Write one or two word for the following statement/definition :

Organisms which depend on the producers for food either directly or indirectly


One of the following is not a consumer. This one is :
(a) giraffe
(b) antelope
(c) algae
(d) alligator


The sea water contains water beetles, tadpole, fish and weeds.

Write a food chain comprising all the given organisms.

 


The sea water contains water beetles, tadpole, fish and weeds.

Which organism is a secondary consumer?


'If we excessively use pesticides to protect the crops from diseases, then it may cause long-term  damage to mankind'. Justify this statement.


Consider the following food chain

(i) Plants → Mice → Snakes → Hawks
(ii) Plants → Mice →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.:


What provides the energy which then flows through a food chain?
(a) glucose
(b) oxygen
(c) respiration
(d) sunlight


In the following food chain, only 2J of energy was available to the peacocks. How much energy would have been present in Grass? Justify your answer.

GRASS → GRASS HOPPER → FROG → SNAKE → PEACOCK


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