हिंदी

Which of the Following Gets the Minimum Energy Through the Food Chain in an Ecosystem? (A) Carnivore (B) Large Carnivore (C) Producer (D) Herbivore

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प्रश्न

Which of the following gets the minimum energy through the food chain in an ecosystem?
(a) carnivore
(b) large carnivore
(c) producer
(d) herbivore

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उत्तर

 large carnivore
As large carnivores are at the upper trophic levels, they get the minimum energy through the food chain, according to the 10 per cent law.

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अध्याय 5: Our Environment - Exercise 2 [पृष्ठ २४२]

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लखमीर सिंग Biology Part 3 [English] Class 10
अध्याय 5 Our Environment
Exercise 2 | Q 48 | पृष्ठ २४२

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संबंधित प्रश्न

What are the various steps of food chain called?


Fill in the following blank with suitable word :

In nature, all green plants are............ whereas animals are consumers.


A student went to study a local pond. In one part of the pond she noticed tadpoles scraping at some pond weed. In another part she saw a water beetle holding a tadpole in its jaws.
(a) Construct a food chain for the pond.
(b) How many links are there in this chain?


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

Which organisms in the food chain are herbivore, and carnivores?


A food chain occurring in the sea which provides food for many people can be written as :
phytoplankton → zooplankton → X → Y

Name two zooplanktons.


Match the terms given in column I with the terms given in column II and column III having the same meaning :

Column I Column II Column III
(1) Secondary consumer Herbivore 1st trophic level
(2) Primary consume Autotroph 3rd trophic level
(3) Producer Carnivore 4th trophic level
(4) Tertiary consumer Large carnivore 2nd trophic level

Explain how harmful chemicals enter our bodies.


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.


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?


The harmful chemical which is accumulating in human beings through food chain is :
(a) benzenehexachloride
(b) dichlorodiphenyltrichloroethane
(c) chlorofluorocarbon
(d) abscisic acid


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 food chain consists of fish, larvae, phytoplanktons and birds. The level of pesticides in water in which the fish, larvae and phytoplanktons live is quite high.

Which other organism you could write in place of bird in the above food chain?


What are decomposers? What will be the consequence if the decomposers are completely eradicated from an ecosystem? Give justification in support of your answer.


Arrange the following in a correct sequence and form a food chain

Rabbit Carrot Eagle Snake


Give one example of a food chain in an aquatic ecosystem?


Food chains are very important for the survival of most species.

If 10,000 J solar energy falls on green plants in a terrestrial ecosystem, what percentage of solar energy will be converted into food energy?


Analogy:

Primary Consumer: Goat, Cow:: Secondary Consumer: ______.


Which group of organisms are not constituents of a food chain?

  1. Grass, lion, rabbit, wolf
  2. Plankton, man, fish, grasshopper
  3. Wolf, grass, snake, tiger
  4. Frog, snake, eagle, grass, grasshopper

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.

 


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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