Question
Explain the various preventive measures against insect pests.
✓
Answer
Preventive measures against insect pests:
- Root cutting type of insects is controlled by mixing insecticides in the soil.
Example: chloropyriphos.
- Stem and leaf cutting type of insects can be controlled by dusting or spraying the contact insecticides.
Example: malathion, lindane and thiodan.
- All sap sucking insects can be controlled by spraying systematic insecticides.
Example: dimethoate and metasystox.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Describe the mechanism of crop variety improvement.
What should be do to get maximum benefit from a crop field?
Mention two ways by which a photosynthesing cell belonging to this group differs from a cell of your body.
Carry out the following osmosis experiment:
Take four peeled potato halves and scoop each one out to make potato cups, one of these potato cups should be made from a boiled potato. Put each potato cup in a trough containing water. Now,
Take four peeled potato halves and scoop each one out to make potato cups, one of these potato cups should be made from a boiled potato. Put each potato cup in a trough containing water. Now,
- Keep cup A empty.
- Put one teaspoon sugar in cup B.
- Put one teaspoon salt in cup C.
- Put one teaspoon sugar in the boiled potato cup D.
- Explain why water gathers in the hollowed portion of B and C.
- Why is potato A necessary for this experiment?
- Explain why water does not gather in the hollowed out portions of A and D.
Differentiate between pathogens and pests. How does an insect-pest attack the plants?
What are the various types of animal tissues? Mention briefly the location and one main function of each class of tissue.
How do you differentiate between capture fisheries, inland fisheries and aquaculture?
- Identify figures A and B.
- Label X, Y and Z.
- Which one act as impulse booster?
- Which one is under control our will?
Draw well labelled diagrams of various type of muscles found in human body.
Suggest some preventive measures for the diseases of poultry birds.