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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? - Science

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प्रश्न

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?

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उत्तर

The cat in the food chain will have the maximum concentration of harmful chemicals in its body because it lies at the highest trophic level.

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अध्याय 5: Our Environment - Exercise 2 [पृष्ठ २४०]

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लखमीर सिंग Biology (Science) [English] Class 10
अध्याय 5 Our Environment
Exercise 2 | Q 5 | पृष्ठ २४०

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संबंधित प्रश्न

What will be the amount of energy available to the organisms of the 2nd trophic level of a food chain if the energy available at the first trophic level is 10,000 joules?


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


What are planktons?


Write an aquatic food chain.


What will happen if deer is missing in the food chain given below?

Grass → Deer → Tiger


In the figure given alongside, the various trophic levels are shown in the form of a pyramid. At which trophic level the maximum energy is available?


One of the following is a micro-consumer. This one is :
(a) ant
(b) lice
(c) fungi
(d) mosquito


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 the organism which Y could be.


Some hunters are roaming in the plush green forest of Africa. They spot a deer and kill it. They decide to roast the deer there and then and eat it. When the hunters had just finished enjoying the feast of roasted deer, a lion attacks them. The lion kills one of the hunters and eats his flesh.
(a) write a food chain which provides food to lion in this case.
(b) Which animal (other than deer) the lion could look for food if he did not get the hunter as prey?
(c) Which other animal in the forest could have been in place of lion?
(d) How does the above food chain differ form the food chain such as : plants → goat → man?


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


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

Name the process in which a harmful chemical enters the food chain and gets concentrated at each trophic level.


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


What is meant by bioconcentration of pesticides


An aquatic food chain comprises of the organisms like tadpoles, weeds, fish and water beetles. The organism which gets the minimum energy through this food chain is :
(a) water beetles
(b) tadpoles
(c) weeds
(d) fish


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


______ obtained energy from the chemical breakdown of dead organisms.


What is Autotrophs?


In a food chain, the third trophic level is always occupied by


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