Biology, asked by teesha3004, 1 year ago

Mention three different ways in which crop plants can be attacked by insect pests. Also suggest one control measure and two preventive measures against pests.
CBSE Class IX Science SA 2 (3 Marks)

Answers

Answered by jaydatt20001
0
biocontrol agent are the best against pest
Answered by Anonymous
1

Three ways in which crop plants can be attacked by insect pests :

(i)   They cut the plant parts.

(ii) They suck the cell sap from various parts.

(iii)   They bore into stem and fruits.

Control measure : Spraying pesticides

Preventive measure : (i) Use of resistant varieties, (ii) Ploughing

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