मराठी

A Food Chain Comprises of Cat, Seed-eating Bird, Plants, and Dog. the Organism Which Will Have the Maximum Concentration of Harmful Pesticides Coming Through the Food Chain is Most Likely to Be : (A) - Science

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प्रश्न

A food chain comprises of cat, seed-eating bird, plants, and dog. The organism which will have the maximum concentration of harmful pesticides coming through the food chain is most likely to be :
(a) cat
(b) plants
(c) dog
(d) seed-eating bird

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उत्तर

 dog
The concentration of harmful pesticides in the bodies of birds and animals increases at each trophic level, and hence the dog in the given food chain will have the maximum concentration of harmful pesticides. 

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

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लखमीर सिंह Biology (Science) [English] Class 10
पाठ 5 Our Environment
Exercise 2 | Q 49 | पृष्ठ २४२

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संबंधित प्रश्‍न

State with reason any two possible consequences of elimination of decomposers from the Earth.


In a food chain of frog, grass, insect and snake, assign trophic level to frog.


Give reason to justify the following: The existence of decomposers is essential in a biosphere.


List two biotic components of a biosphere.


Which of the following belong to the same trophic level?
Goat ; Spider ; Plants ; Hawk ; Rat

 

Construct a food chain comprising the following :
Snakes, Hawk, Rats, Plants


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


Name one decomposer.


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


Give one example of a simple food chain.


The following is a food chain that ends with human :
plants → bee → human

Explain how plants provide food for bees.


The following is a food chain that ends with human :

Do you think that the food chain given in this question can really be regarded as a food chain? Explain your answer.


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

Name two zooplanktons.


What would happen to the number of rabbits and grass plants if the number of foxes decreased?


What would happen to the number of grass plants and foxes if the number of rabbits increased?


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 food chain comprising birds, green plants, fish and man. The concentration of harmful chemical entering the food chain will be maximum in ______.


Natural agents like ______ are the decomposition factors breaking complex forms into simpler units.


______ obtained energy from the chemical breakdown of dead organisms.


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