Pesticides, Insecticides
Trending Questions
Biocontrol refers to the biological control of ________ .
- Crop quality
- Pests
- Weeds
- Yield
Explain the methods of controlling insect pests.
Describe the various methods of controlling pests attacking stored grains.
Excessive use of chemicals in agriculture cause environmental pollution.
True
- False
Discuss some effective methods in controlling the houseflies and cockroaches.
What are crop's pests ? Suggest preventive measures to control pests.
Explain the various preventive measures against insect pests.
Name two natural pesticides.
Name two natural pesticides.
- Aluminiumm Phosphide
- Methyl Bromide
- Benzene Hexachloride
- Ethylene dichloride-carbon tetrachloride
Pesticides are the chemicals that kill.
(a) weeds
(b) mites
(c) insects
(d) all of these
Is neem a biopesticide?
Define pesticide.
1.Contamination means entry of germs by insect bite T/F
Give one example of natural insecticide.
Excessive use of chemicals in agriculture can cause environmental pollution.
True
False
- Pesticides are poisonous.
- Pesticides are expensive.
- Pesticides are harmful for human consumption.
- Pesticides cause water and soil pollution.
Is insecticide harmful to humans?
Give one word for the following : A toxic substance effective against insects.
Why some neem leaves are kept in an iron drum containing pulses?
The pesticides need to be replaced because:
they are very costly
they cannot be stored for a long time
they are mostly toxic/poisonous and non-biodegradable
they cause abnormalities in the target population
match the columns
Column 1 | Column 2 |
---|---|
The substance that dissolves in a solvent |
solution |
A homogeneous mixture of solute in a solvent |
solute |
organic farming |
preventing water pollution |
A solution in which no more solute can dissolve |
water pollution |
oil spills |
saturated solution |
- All of the above
- Diatomaceous earth
- Malathion
- Pyrethrins
- Ethylene dichloride-carbon tetrachloride
- Benzene Hexachloride
- Methyl Bromide
- Aluminiumm Phosphide
Name one insecticide.
- Pesticides are poisonous.
- Pesticides are expensive.
- Pesticides are harmful to human consumption.
- Pesticides cause water and soil pollution.
- Pyrethrum
- Malathion
- Parathion
- DDT
- Chemical control
- Beetle control
- Biological control
- Disease control