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b) Winnowing
c) Fumigation
d) Dusting
8 Which of the following crops can be grown in all seasons?
a) Rice
b) Wheat
c) Vegetables
d) Mustard
9 Who is called the "Father of Green Revolution" in India?
a) M.S. Ramaiah
b) Aryabhatta
c) M.S. Swaminathan
d) Jawaharlal Nehru
10 Weeds are the unwanted plants that grow along with the cultivated plants. How do
they affect the crop plants?
a) By killing plants in the field before they grow
b) By dominating the plants to grow
c) Competing for various resources of plants causing low availability of nutrients
d) All of above
Subjective
SN Questions Marks Level
1 State the factors responsible for spoilage of stored food grains. 1 E
2 Name the pathogens that can cause diseases in plants? 1 E
3 (a) Define weeds. Give two methods to eradicate them. 3 Av
(b) Why is the removal of weeds essential for a good harvest?
4 How do the insect pests attack the crop plants? 3 Av
5 What are insect pests in crop production? Suggest preventive 3 D
measures to control pests.
6 (a) What effects are cast upon the stored grains by biotic and 3 D
abiotic factors?
(b) How can these factors be controlled?
