Class 9 - Pearson - Biology - Improvement in Food ResourcesContact Number: 8527521718Class 9 - Pearson - Biology - Improvement in Food ResourcesContact Number: 8527521718The crops which are grown from June to October are called __________.
The method of producing new variety of crops that are superior to the existing varieties is known as _______________.
The process of producing new variety of crops by crossing two genetically different parent crops is known as ______________.
The modern technique in the field of crop variety improvement is known as ___________.
The nutrients that are required in large quantities by the plants are known as _______________.
______________ is known as the supply of controlled amount of water to the plants.
Rearing of animals is known as cattle ___________________.
_____________ given in time helps the farm animals from viral and bacterial diseases.
The process of obtaining fish from natural resources is known as _____________.
The maintenance of hives of honey bees for the production of honey is called _______________.
Cattle are both affected by internal and external _______________.
______________ crop is an example of rabi crops.
(1) Paddy
(2) Soya bean
(3) Wheat
(4) Cotton
The method of producing variety of crops by cross breeding the two species of same genus is known as _________________.
(1) Inter-varietal hybridization
(2) Inter-specific hybridization
(3) Inter-generic hybridization
(4) Genetic engineering
What are the basic objectives behind the crop variety improvement?
(1) To increase the yield of plants products.
(2) To produce biotic and abiotic resistance to the plants.
(3) To improve the quality of food crops.
(4) All of these.
Identify the micronutrients among the following:
(1) Nitrogen
(2) Potassium
(3) Calcium
(4) Iron
The prevention of water logging in the clayey soil is due to the presence of ______________.
(1) organic matter
(2) nitrogen
(3) oxygen
(4) Phophorus
The salt water fishery is known as ___________.
(1) Inland fishery
(2) marine fishery
(3) river water fishery
(4) None of these
The external parasites such as ________________ affect the stomach of animals.
(1) worms (2) flukes
(3) virus (4) bacteria
____________ are used to protect the cattle from rain, heat and cold.
(1) Sheds without roof
(2) Open places with no shelter
(3) Roofed sheds
(4) Places near to sea
What are the different stages that are involved in the farming practices?
Define hybridization.
Name the different methods that are employed in crop variety improvement.
What are the different practices that are involved in crop production management?
Mention the important objectives of crop variety improvement.
What is manure?
Distinguish between vermicompost and green manure.
We are getting different varieties of rice in the market. All of them resemble each other. Explain.
Usage of genetically modified crops has increased to greater extent in recent times. Explain.
Replacing chemical feritlizers by organic manure is good for soil more than plants. Explain.
What are the advantages of growing wheat with chick pea in mixed cropping?
What is the reason behind drying the grains thoroughly after the production?
What is cattle farming?
What do you mean by animal husbandry and what are its inclusions?
What is the breed of chicken which are used only for meat production?
What are the different types of fishery?
Name the process of capturing fish in the natural resource.
What are the different types of fish included in marine fishery?
Write a short note on composite fish culture.
National office of animal health works to provide the farmers with different range of vaccines to protect the health and welfare of their cattle. Why is it necessary to give vaccine to cattle?
Ramesh found that there is difference in production of milk by their cow and the dairy cow. What could be the reason behind this?
Why is it important to provide balance and sufficient diet for the cattle?
Why is it economical to cross-breed Aseel and Leghorn in poultry?
Identify the type of fish farming which increases the productivity but lacks in pure fish seeding for culture. Also mention its merits.
People in Indonesia practice Paddy fish culture to a greater extent. Explain its advantages.
Honey plays a major role in many of ayurvedic medicines. How is it produced?
What type of food is required by the cattle?
What type of combination of fishes are rared in composite fish culture?
What is the feed required for the following fishes?
(1) Catlas
(2) Rohus
(3) Mrigals
(4) Grass carp
Identify the false statement regarding poultry.
(1) Cross breeding technique in poultry helps in producing new varieties with improved qualities.
(2) Vaccination can prevent the occurrence of infectious diseases.
(3) Poultry feed should be rich in vitamin K and E.
(4) Proper sanitation and maintenance are not so much required for poultry.
Identify the correct statement/s regarding the cross breed of Aseel and Leghorn.
(i) It has greatest capability of production of eggs.
(ii) It cannot sustain at high temperatures.
(iii) Low maintenance is required.
(iv) The name of this breed is broiler chicken
(1) Only (i)
(2) Both (i) and (iii)
(3) Only (ii)
(4) Both (ii) and (iv)
Can green revolution be considered a sustainable agricultural practice? Give reason in support of your answer.
What are the advantages of rain water harvesting?
Poultry feed should be rich in vitamin E. Give reason.
Oil cakes are used as the food for cattles. Why?
Assertion (A): Paddy is grown in rainy season.
Reason (R): Paddy is a kharif crop.
(1) Both A and R are true and R is the correct explanation of A.
(2) Both A and R are true, but R is not the correct explanation of A.
(3) A is true but R is false.
(4) A is false but R is true
Assertion (A): Crop rotation is a part of sustainable agricultural practice.
Reason (R): Crop rotation helps in maintaining the soil fertility.
(1) Both A and R are true and R is the correct explanation of A.
(2) Both A and R are true, but R is not the correct explanation of A.
(3) A is true but R is false.
(4) A is false but R is true
Assertion (A): Intercropping increases the productivity of an agricultural land.
Reason (R): Same fertilizers and pesticides can be used for different variety of crops.
(1) Both A and R are true and R is the correct explanation of A.
(2) Both A and R are true, but R is not the correct explanation of A.
(3) A is true but R is false.
(4) A is false but R is true
Assertion (A): River lift system is more economical than canal system for irrigation.
Reason (R): In river lift system, a pump is used to lift the water from river.
(1) Both A and R are true and R is the correct explanation of A.
(2) Both A and R are true, but R is not the correct explanation of A.
(3) A is true but R is false.
(4) A is false but R is true
Assertion (A): Cross breeding of dairy animals increases the productivity of milk.
Reason (R): Lactation period of dairy animals can be increased by cross breeding.
(1) Both A and R are true and R is the correct explanation of A.
(2) Both A and R are true, but R is not the correct explanation of A.
(3) A is true but R is false.
(4) A is false but R is true
Assertion (A): Composite fish culture involves the cultivation of different varieties of fish having same feeding habits.
Reason (R): Different varieties of fish utilize different areas of the same pond for their feed.
(1) Both A and R are true and R is the correct explanation of A.
(2) Both A and R are true, but R is not the correct explanation of A.
(3) A is true but R is false.
(4) A is false but R is true
Assertion (A): Protein and fat-rich food should be provided to broiler chicken.
Reason (R): Broiler chicken is grown to provide eggs of good quality.
(1) Both A and R are true and R is the correct explanation of A.
(2) Both A and R are true, but R is not the correct explanation of A.
(3) A is true but R is false.
(4) A is false but R is true
Assertion (A): Integrated farming is a part of sustainable agricultural practices.
Reason (R): Sometimes fish is cultured in the paddy field along with the cultivation of rice crop.
(1) Both A and R are true and R is the correct explanation of A.
(2) Both A and R are true, but R is not the correct explanation of A.
(3) A is true but R is false.
(4) A is false but R is true