Class 9 Exam > Class 9 Notes > Science Class 9 > Worksheet: Improvement in Food Resources
Improvement in Food Resources Class 9 Worksheet Science Chapter 12
Q.1. Fill in the blanks
(i) Foreign breeds of animals are also known a ____ breeds .
(ii) Tallness and profuse branching are the desired characters in _____ type of crops.
(iii) Richest component in cereals is _____.
(iv) Genetically modified crops are produced by introducing a _____ coding for desired character in plants.
(v) Out of sixteen essential nutrients, thirteen are provided by ____ to the plants.
Q.2. Which of the following statement is true?
(a) Exotic breeds of cattle are selected for long lactation periods
(b) Local breeds of cattle are selected for long lactation periods
(c) Exotic breeds of cattle are selected for high resistance for diseases
(d) Local breeds of cattle are selected for low resistance for diseases
Q.3. Which one of the following fish is a bottom feeder?
(a) Rohus
(b) Mrigals
(c) Grass carps
(d) Catlas
Q.4. Taste and quality of honey depends upon:
(a) Pasturage
(b) Type of flowers available
(c) Pollen collection
(d) All of these
Q.5. Which of the following is a gaseous fumigant?
(a) Methyl Bromide
(b) Ethylene dichloride
(c) DDT
(d) Potassium chloride
Q.6. What are the hazards of using fertilizers?
Q.7. What are the main practices involved in keeping of animals or animal husbandry?
Q.8. How do good animal husbandry practices benefit farmers?
Q.9. What is hybridization?
Q.10. For increasing production, what is common in poultry, fisheries and bee-keeping?
Q.11. How do biotic and abiotic factors affect crop production?
Q.12. What factors may be responsiblefor losses of grains duringstorage?
Q.13. Why should preventive measures and biological control methods bepreferred for protecting crops?
Q.14. What is pasturage and how is it related to honey production?
Q.15. What are the advantages of organic farming?
You can find Worksheets Solutions here: Worksheet Solutions: Improvement in Food Resources
The document Improvement in Food Resources Class 9 Worksheet Science Chapter 12 is a part of the Class 9 Course Science Class 9.
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FAQs on Improvement in Food Resources Class 9 Worksheet Science Chapter 12
| 1. What are the different methods of improving food resources? |  |
Ans. Some of the methods of improving food resources include crop rotation, multiple cropping, use of fertilizers and pesticides, irrigation, and modern farming techniques.
| 2. How does crop rotation help in improving food resources? | |
Ans. Crop rotation involves growing different crops in a sequential manner on the same piece of land. It helps in replenishing the soil nutrients and prevents the build-up of pests and diseases. This, in turn, improves the overall productivity and quality of food resources.
| 3. What is the significance of multiple cropping in improving food resources? | |
Ans. Multiple cropping refers to the practice of growing two or more crops in the same field during a single cropping season. It helps in maximizing the use of available resources such as sunlight, water, and nutrients, leading to increased food production. Additionally, multiple cropping provides a more stable and diverse food supply.
| 4. How do fertilizers and pesticides contribute to the improvement of food resources? | |
Ans. Fertilizers provide essential nutrients to the soil, which are necessary for plant growth and development. They help in replenishing the nutrient levels in the soil, thus enhancing the productivity of food resources. Pesticides, on the other hand, help in controlling pests and diseases that can damage crops and reduce yields, thereby ensuring a higher quantity and quality of food resources.
| 5. What role does irrigation play in improving food resources? | |
Ans. Irrigation is the process of supplying water to crops artificially when rainfall is insufficient. It helps in ensuring a continuous and adequate water supply to crops, which is crucial for their growth and survival. Proper irrigation techniques not only improve crop yields but also allow cultivation in areas with limited rainfall, thereby expanding the availability of food resources.
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