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.
Based on kinds of biological material used, how many types of manures are there?
Q 2.
What is the full form of IARI?
Q 3.
Name some pulses that give us proteins.
Q 4.
What are draught animals?
Q 5.
Name the revolution which led to better and efficient production and availability of milk.
Q 6.
Give examples of fumigants.
Q 7.
What are fertilizers? Give two examples.
Q 8.
Out of manures and fertilizers, which one is nutrient specific?
Q 9.
Fertilizers are useful for short term benefits or long-term benefits?
Q 10.
From where do plants acquire the following nutrients?
(i) Nitrogen
(ii) Hydrogen
Q 11.
Manures are useful for short term benefits or long-term benefits?
Q 12.
Fill In the Blanks :
_______ and _________ are a rich source of vitamins and minerals.
Q 14.
Fill In the Blanks :
The practice of growing two or more crops simultaneously on the same field is called _____.
Q 16.
Fill In the Blanks :
The science of growing vegetables, fruits and ornamental plants is called _________.
Q 17.
Fill In the Blanks :
Nutrients required by plants in large quantities are called ________.
Q 18.
Fill In the Blanks :
Marine fish capture is done by fishing nets guided by _______ and ________.
Q 19.
What are Macro-nutrients?
Q 20.
Fill In the Blanks :
__________ and _________ provide us with all our animal and plant food.
Q 21.
Name the approaches used to enhance crop yield.
Q 22.
Fill In the Blanks :
The basic advantages of inter-cropping are that it maintains soil _____ and controls _____.
Q 23.
Give examples of fodder crops.
Q 24.
Define inter-cropping.
Q 25.
Name the nutrients that plants take from air?
Q 27.
What is vermicompost?
Q 28.
Fill In the Blanks :
Cattle used for farm labour is called ______.
Q 29.
What are the desirable agronomic characteristics for crop improvement?
Q 30.
List examples of Macro-nutrients for plants?
Q 31.
What is mixed cropping?
Q 32.
Give examples of Pesticides
Q 33.
Fill In the Blanks :
_______ and ________ are the main sources of nutrient supply to crops.
Q 34.
What is domestication?
Q 35.
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 36.
Fill In the Blanks :
Xanthium, Cyperinus rotundus and Parthenium plants generally grow along paddy plants. Such plants are called ____.
Q 37.
Give examples of oilseeds that provide us fats.
Q 38.
Name the biotic factors that affect on crop production.
Q 39.
List the nutrients that plants absorb from soil.
Q 40.
What is organic farming?
Q 41.
Fill In the Blanks :
Bos indicus are the species of ________.
Q 42.
Give examples of inter-cropping.
Q 43.
Fill In the Blanks :
Composting done using earthworms is called _________.
Q 44.
Fill In the Blanks :
Vitamin ___ and ____ (A, B, C, D , K) levels are kept high in the poultry feeds.
Q 45.
What are the major sources of food? Name the commercial practices we perform to obtain the food.
Q 46.
Name the programmes executed in India to increase food production.
Q 47.
List the seven micro-nutrients taken by plants?
Q 48.
What is the full form of NPK?
Q 49.
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 50.
Fill In the Blanks :
Red Sindhi and Sahiwal are breeds of _____ _______.
