EASY
Earn 100

Name some agricultural pests.

Important Questions on Production of Food from Plants

MEDIUM
Write a note on the use of fungi as a biopesticide.
MEDIUM

Crop plants may be attacked by pests which affect the crop production. Fungi are such type of pests which cause diseases like

MEDIUM

What are used to protect plants from various pests?

MEDIUM
The agrochemicals have enriched crop production but not water. Why?
EASY
Read the given statements and select the correct option.
Statement 1: Pheromones are used as biological method to control pest.
Statement 2: Statement 2: Pheromones lure adult male insects into special traps and prevent them from breeding.
EASY

Write the quadrants in which the following points lie:

-4,7

MEDIUM

Complete the following table of harmful effect of synthetic substances on living organisms.

Synthetic substance Living being affected directly  Harmful effect
DDT, methyl parathion pentachlorophenol    
Aldrin, Heptachlor    

 

MEDIUM

Match the following.

Column I Column II
1. Bio-pesticide a. Neem leaves
2. Bio-predators b. Bacillus thuringiensis
3. Bio-fertilizer c. Control whiteflies
4. Bio-indicators d. Improve soil fertility
5. Bio-repellants e. Quality of environment
MEDIUM

Given below is a list of few chemicals that are used for protection of crops
(i) Dalapon
(ii) Butachlor
(iii) Malathion
(iv) Simazine
(v) Disyston
(vi) Gammexane
How many of these are used as insecticides?