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Science Practice Quiz 233
10 questions · 12 minutes
12:00
Q1.What are the plants that grow naturally along with the crop in a field called?
Explanation: These undesirable plants are called weeds, as they compete with the crop plants for water, nutrients, space, and light.
Q2.What is the process of removing weeds from a field called?
Explanation: The removal of weeds is called weeding, which is necessary since weeds compete with the crop plants for water, nutrients, space, and light.
Q3.Why is weeding necessary in a field?
Explanation: Weeding is necessary since weeds compete with the crop plants for water, nutrients, space, and light, thus affecting the growth of the crop.
Q4.What is the best time for the removal of weeds?
Explanation: The best time for the removal of weeds is before they produce flowers and seeds.
Q5.What is used to uproot weeds manually?
Explanation: Manual removal of weeds includes physical removal of weeds by uprooting or cutting them close to the ground, from time to time, with the help of a khurpi.
Q6.How are weedicides applied to the fields?
Explanation: The weedicides are diluted with water to the extent required and sprayed in the fields with a sprayer.
Q7.Why should farmers use weedicides carefully?
Explanation: Spraying of weedicides may affect the health of farmers, so they should use these chemicals very carefully and cover their nose and mouth with a piece of cloth during spraying.
Q8.What is the process of cutting a mature crop called?
Explanation: The cutting of crop after it is mature is called harvesting, which usually takes 3 to 4 months for a cereal crop to mature.
Q9.What is used for storing food grains at home to protect them from pests?
Explanation: Dried neem leaves are used for storing food grains at home to protect them from pests.
Q10.What is obtained from fish that is rich in vitamin D?
Explanation: We get cod liver oil from fish which is rich in vitamin D.
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