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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

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प्रश्न

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

एक पंक्ति में उत्तर
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उत्तर

The amount of energy available to big fish will be 0.1 J. Given 10,000 J of energy is available to small algae from the sun. It can be calculated as follows:

Small algae → Zooplankton → Fish → Big fish
10,000 J → 1,000 J → 100 J → 10 J →

The amount of energy available to big fish is 10 J.

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अध्याय 5: Our Environment - Exercise 2 [पृष्ठ २४१]

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लखमीर सिंग Biology Part 3 [English] Class 10
अध्याय 5 Our Environment
Exercise 2 | Q 37.2 | पृष्ठ २४१

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संबंधित प्रश्न

Why are plants called producers?


Which of the following belong to the same trophic level?
Tree ; Frog ; Snake ; Grass ; Lizard

 

Name the organisms belonging to the second and the fourth trophic levels in the food chain comprising the following :
Frogs, Plants, Snakes, Hawk, Insects


Which organisms belong to third and fourth trophic levels in the food chain comprising the following?
Rats, Plants, Hawk, Snakes


Write down a food chain in the sea.


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


Construct a long food chain.


In the food chain comprising of a snake, grass, insect, and frog, the secondary consumer is :
(a) insect
(b) snake
(c) frog
(d) grass


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

Which organisms can trap solar energy to make food?


If a harmful chemical enters a food chain comprising cat, mice and plants, which one of these organisms is likely to have the maximum concentration of the harmful chemical in its body?


Explain how harmful chemicals enter our bodies.


What percentage of sun's energy falling on the leaves of green plants is utilised by the plants in the process of photosynthesis and stored as chemical energy of food?
(a) 99 per cent
(b) 10 per cent
(c) 1 per cent
(d) 20 per cent


Most of the water surface of a lake is covered with algae. This algae is part of the food chain which also includes small fish, bird, larvae and big fish. Which of the following will obtain the maximum energy?
(a) big fish
(b) bird
(c) larvae
(d) small 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.


Bacteria and fungi are called decomposers.


Which of the following is a logical sequence of food chain?


Observe the food web and answer the questions given below:

Why do all food chains start with plants?


______ obtained energy from the chemical breakdown of dead organisms.


DDT was sprayed in a lake to regulate breeding of mosquitoes. How would it affect the trophic levels in the following food chain associated with a lake? Justify your answer.

 


Study the picture given below showing three food chains (a), (b) and (c) and answer the following questions:

  1. Name the type of ecosystems that exist in food chains (b) and (c).
  2. The first trophic level in all food chains is producers. Why? What percentage of solar energy do these producers capture for their use?
  3. Why are the arrows shown in the diagram in one direction only and not vice versa? Justify.

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