मराठी

If We Excessively Use Pesticides to Protect the Crops from Diseases, Then It May Cause Long-term Damage to Mankind. Justify this Statement. - Science

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प्रश्न

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

उत्तर

Chemical substances such as pesticides are sprayed over crop plants to protect them from pests and diseases. When herbivorous animals eat the plant food, these poisonous chemical pesticides go into their bodies. Man, being an omnivore, eats plant food as well as the meat of herbivores. Thus, the pesticides present in plant food and herbivores get transferred to man's body through food. Pesticides are non-biodegradable chemicals, so they get accumulated at each trophic level. Since humans occupy the top level in any food chain, the maximum amount of harmful chemical pesticides gets accumulated in our bodies, damaging our health gradually.
Hence the statement 'excessive use of pesticides to protect crops from diseases may cause long-term damage to mankind' is justified.

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

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लखमीर सिंह Biology (Science) [English] Class 10
पाठ 5 Our Environment
Exercise 2 | Q 21 | पृष्ठ २४१

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संबंधित प्रश्‍न

Why are plants called producers?


Write down a food chain in the sea.


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


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

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


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

Which organisms are (i) predators, and (ii) prey?


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(a) glucose
(b) oxygen
(c) respiration
(d) sunlight


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Write the food chain comprising all the organisms mentioned above.


Give some examples for Biodegradable and Non-biodegradable waste.

S. No. Biodegradable waste Non-biodegradable waste
1. Food Waste Plastic Bottles
2.    
3.    
4.    
5.    

In the following food chain, vertical arrows indicate the energy lost to the environment and horizontal arrows indicate energy transferred to the next trophic level. Which one of the three vertical arrows (A, C and E) and which one of the two horizontal arrows (B and D) will represent more energy transfer? Give reason for your answer.

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GRASS → GRASS HOPPER → FROG → SNAKE → PEACOCK


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