Q 4. There are animals that destroy the crop before it is harvested. Farmers find it difficult to protect the crops from these animals, insects and microorganisms. Provide information by answering the questions.
(a) What are these animals/insects called? Name few that ruin the standing crops.
(b) What methods do the farmers employ to protect their crops?
(c) Name some common insecticides used to protect crops.
(d) Write the difference between insecticide, pesticide, fungicide and rodenticide.
(a) What are these animals/insects called? Name few that ruin the standing crops.
(b) What methods do the farmers employ to protect their crops?
(c) Name some common insecticides used to protect crops.
(d) Write the difference between insecticide, pesticide, fungicide and rodenticide.
Answers & Comments
Answer:
The answer to the first question asked is the animals/ insects which ruin standing crops are called pests.
Explanation:
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Answer:
the answers of all four parts are given below:
Explanation:
1. these organisms are called pests. examples: Fungus such as Rust and smut fungi, insects like grasshoppers and animals like rats.
2. to protect the crops from pest, farmers uses insecticide and pesticides respectively. these can be organic and inorganic.
3. cyclodienes and lindane
4. all of these kills and hinders the growth. pesticides kills pest, insecticide kills insects, fungicide kills fungus of various range and rodenticide kills rodents