CBSE Class 9 Science Chapter 15 - Improvement in Food Resources Revision Notes - Free PDF Download
In Chapter 15 for Class 9 Science Improvement in Food Resources Notes, we learn that all living organisms need food. Food supplies proteins, carbohydrates and essential nutrients for good body development, growth and health. This chapter also includes the sources from where the raw materials are obtained. It is a very interesting topic and through this chapter, we get a lot of insights on the various resources for food and sustainable agriculture. You can download the PDF of Improvement of Food Resources Notes and can also register for online tuitions for Class 9 Science on Vedantu. With the help of the notes created by Vedantu, you will surely master the topic. Vedantu is a platform that provides free CBSE Solutions (NCERT) and other study materials for students. Maths Students who are looking for the better solutions, they can download Class 9 Maths NCERT Solutions to help you to revise complete syllabus and score more marks in your examinations.
Improvement in Food Resources Class 9 Notes CBSE Science Chapter 15 [Free PDF Download]
FAQs on Improvement in Food Resources Class 9 Notes CBSE Science Chapter 15 [Free PDF Download]
1. How do Plants get Nutrients?
Nutrients to the plants are mostly supplied by the soil which are then absorbed by roots of plants. Some nutrients like carbon, hydrogen and oxygen are provided by air and water too.
2. What are the Different Methods of Fish Production?
The methods for fish production are:
Capture Fishing: It is the process of obtaining fish from natural resources like ponds, canals, rivers, etc. Fishes can be located easily and then caught using fishing nets.
Mariculture: It is a practice of culturing of marine fish varieties in the coastal waters. Satellites and echo sounders are used for locating large fish schools and then caught using many kinds of fishing nets.
Aquaculture: It is the production of fish from freshwater resources like canals and brackish water resources like estuaries and lagoons. Fishes can be easily located and caught using simple fishing nets.
3. Give Some Advantages of Mixed Cropping.
The advantages of mixed cropping are:
Chances of pest infestation are greatly reduced.
By growing two or more crops at the same time, soil fertility is improved.
Reduction of crop production failure due to the uncertainty of monsoons.
4. What are Some Preventive Measures for the Diseases of Poultry Birds?
Some measures for prevention of disease in poultry birds are:
Providing nutritional diet to poultry birds.
Cleaning and sanitation of shelter.
Appropriate vaccination of poultry birds.
Spraying disinfectant at regular intervals in the shelter.
5. How can I use Class 9 Chapter 15 Science NCERT Notes?
Vedantu provides NCERT notes for class 9 chapter 15. The notes provided will help you master all the topics and concepts available in the chapter. The notes are written in a simple and easy to understand language making them easier to understand. These notes will also help you in your revision before you write your exam. Apart from this, it will also help you to score well in your exam. You will be able to download the PDF of Class 9 Chapter 15 Improvement of food resources notes, free of cost from the Vedantu website (vedantu.com).
6. What do you understand about improvement in food resources Class 9 Chapter 15?
Class 9 Chapter 15 Improvement in food resources talks about how all living organisms need food to survive. This chapter has very interesting information on all the topics. The food that we consume gives us carbohydrates, proteins, and other essential nutrients. These essentials provide living organisms with good health, good growth, and good body development. Apart from this, the chapter talks about the various sources from where raw materials are obtained. This chapter also provides information about various resources for sustainable agriculture and food.
7. What is the need for improvement in food resources in India?
As there is an increase in the population of the country, the demand for food gradually increases. Although the main source of income comes from agriculture, there is not sufficient land available in India for farming. Therefore, it is important to increase our food production through sustainable agriculture. This ensures that we don't degrade natural resources and that there is a balance in the environment. To do so, we must increase the efficiency of livestock and crops in India.
8. How does change in maturity duration affect crop production?
Maturity refers to the complete development of tissues in fruits and vegetables. The change in maturity duration of crops has a major impact on crop production. When the maturity period of crops becomes shorter, then the total cost of crop production decreases. This makes the crop variety very economical. When the maturity period of crops becomes uniform, it ensures that the harvesting process becomes easy. Uniform maturity also helps to reduce all the losses that may occur during the harvesting of the crops.
9. What are the important topics to learn in Class 9 Science Chapter 15?
Class 9 Science Chapter 15 talks about the improvement in food resources. The important topics and concepts in this chapter include improvement in food resources, animal husbandry, and improvement in crop yields. Apart from this, other important topics include crop production management, crop protection management, cattle farming, fish production, Poultry farming, and bee keeping. This chapter is very interesting and easy to understand. To know more students can refer to the vedantu app.