मराठी

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.

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प्रश्न

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 organism will have the maximum amount of pesticides accumulated through the food chain? What is this process known as?

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उत्तर

The birds will have the maximum amount of pesticides accumulated in them through the food chain. This process is known as biomagnification.

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पाठ 5: Our Environment - Exercise 2 [पृष्ठ २४४]

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लखमीर सिंह Biology Part 3 [English] Class 10
पाठ 5 Our Environment
Exercise 2 | Q 64.2 | पृष्ठ २४४

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संबंधित प्रश्‍न

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.


Fill in the following blank with suitable word :

A series of organisms, each of which feeds on the next organism, the beginning of which is a green plant, is called a .............


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


Organisms which synthesise carbohydrates from inorganic compounds by using radiant energy are called ______.


Organisms of a higher trophic level which feed on several types of organisms belonging to a number of lower trophic levels constitute the ______.


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?


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.

Write a food chain comprising all the given organisms.

 


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

Explain how plants provide food for bees.


Explain how harmful chemicals enter our bodies.


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


Explain why, a food chain usually cannot have more than three or four steps.


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


Bacteria and fungi are called decomposers.


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

Matter and energy are two fundamental inputs of an ecosystem. Movement of:


Observe the food web and answer the questions given below:

Why do all food chains start with plants?


The food chain begins with the energy given by the ______.


Each level in the food chain is called a ______ level.


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