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NCERT Solutions For Class 9 Science Chapter 15 Improvement in Food Resources
NCERT Solutions For Class 9 Science Chapter 15 Improvement in Food Resources are prepared by CBSE student eCARE expert to score good marks in class 9. This chapter contain many topics which are very important to score good in class 9. There are some important topic/Activity mentioned below-
Topics and Sub Topics in Class 9 Science Chapter 15 Improvement in Food Resources:
- Improvement in Food Resources
- Improvement in Crop Yields
- Animal Husbandry
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Some questions are asked by class 9 students related to Science
Question 1. How do biotic and abiotic factors affect crop production?
Answer: Factors responsible for loss of grains, during storage and production are:
(a) Biotic factors like rodents, pests, insects, etc.
(b) Abiotic factors like temperature, humidity, moisture, etc.
Combination of both biotic and abiotic factors causes :
- infestation of insects
- weight loss
- poor germination ability
- degradation in quality
- discolouration
- poor market price
Question 2. What are the desirable agronomic characteristics for crop improvements?
Answer: Desirable agronomic characteristics for crop improvements are:
(a) Tallness and profuse branching are desirable characters for fodder crops.
(b) Dwarfness is desired in cereals, so that less nutrients are consumed by these crops.