Question:
What are weeds?
Answer:
Weeds are unwanted plant species growing in the domesticated crops. The noxious weeds are harmful, adversely affecting crop productivity, causing health hazards in humans and animals and lowering fish production.
Improvement in Food Resources
Q 1.
What is the full form of IARI?
Q 2.
Based on kinds of biological material used, how many types of manures are there?
Q 3.
Name some pulses that give us proteins.
Q 4.
Fertilizers are useful for short term benefits or long-term benefits?
Q 5.
What are draught animals?
Q 6.
Fill In the Blanks :
_______ and _________ are a rich source of vitamins and minerals.
Q 7.
From where do plants acquire the following nutrients?
(i) Nitrogen
(ii) Hydrogen
Q 8.
Out of manures and fertilizers, which one is nutrient specific?
Q 9.
Name the revolution which led to better and efficient production and availability of milk.
Q 10.
Manures are useful for short term benefits or long-term benefits?
Q 11.
Give examples of Pesticides
Q 12.
Fill In the Blanks :
__________ and _________ provide us with all our animal and plant food.
Q 13.
List the seven micro-nutrients taken by plants?
Q 14.
Fill In the Blanks :
Nutrients required by plants in large quantities are called ________.
Q 15.
Give examples of fumigants.
Q 16.
Fill In the Blanks :
Organic substances of animal or plant origin that is added to the soil to increase its fertility and structure are called _____.
Q 17.
Fill In the Blanks :
The basic advantages of inter-cropping are that it maintains soil _____ and controls _____.
Q 18.
What is domestication?
Q 19.
Fill In the Blanks :
The practice of growing two or more crops simultaneously on the same field is called _____.
Q 20.
Name the nutrients that plants take from air?
Q 21.
What are fertilizers? Give two examples.
Q 22.
What is vermicompost?
Q 25.
Fill In the Blanks :
The science of growing vegetables, fruits and ornamental plants is called _________.
Q 26.
Fill In the Blanks :
Vitamin ___ and ____ (A, B, C, D , K) levels are kept high in the poultry feeds.
Q 28.
What are Macro-nutrients?
Q 29.
Fill In the Blanks :
In order to get maximum returns, different crop combinations are grown on the same field in a pre-planned succession. This process is called _______.
Q 30.
Fill In the Blanks :
Cattle used for farm labour is called ______.
Q 31.
What are milch animals?
Q 32.
Give examples of commonly used irrigation systems in our country?
Q 33.
Name the programmes executed in India to increase food production.
Q 34.
Fill In the Blanks :
Xanthium, Cyperinus rotundus and Parthenium plants generally grow along paddy plants. Such plants are called ____.
Q 35.
Give examples of fodder crops.
Q 36.
Fill In the Blanks :
Marine fish capture is done by fishing nets guided by _______ and ________.
Q 37.
Give examples of cereals that give us carbohydrates.
Q 38.
List examples of Macro-nutrients for plants?
Q 40.
Give examples of two major weeds that grow during Kharif season.
Q 41.
Fill In the Blanks :
Unwanted plants in the cultivated field are called ________.
Q 42.
What are the major sources of food? Name the commercial practices we perform to obtain the food.
Q 43.
Define animal husbandry.
Q 44.
Name the approaches used to enhance crop yield.
Q 45.
Give examples of oilseeds that provide us fats.
Q 46.
What are the desirable agronomic characteristics for crop improvement?
Q 47.
What is organic farming?
Q 48.
Define inter-cropping.
Q 49.
Fill In the Blanks :
Composting done using earthworms is called _________.
Q 50.
Fill In the Blanks :
Micro-nutrients or Food additives strengthen _______ system of the cattle and improve their ________ and stimulate digestion.
