How do biotic and abiotic factors affect crop production?

Important Questions on Improvement in Food Resources

MEDIUM

9th CBSE

IMPORTANT

SCIENCE TEXTBOOK FOR CLASS IX>Chapter 15 - Improvement in Food Resources>Questions>Q 2

What are the desirable agronomic characteristics for crop improvements?

MEDIUM

9th CBSE

IMPORTANT

SCIENCE TEXTBOOK FOR CLASS IX>Chapter 15 - Improvement in Food Resources>Questions>Q 1

What are macronutrients, and why are they called macronutrients?

EASY

9th CBSE

IMPORTANT

SCIENCE TEXTBOOK FOR CLASS IX>Chapter 15 - Improvement in Food Resources>Questions>Q 2

How do plants get nutrients?

MEDIUM

9th CBSE

IMPORTANT

SCIENCE TEXTBOOK FOR CLASS IX>Chapter 15 - Improvement in Food Resources>Questions>Q 1

Compare the use of manure and fertilizers in maintaining soil fertility.

MEDIUM

9th CBSE

IMPORTANT

SCIENCE TEXTBOOK FOR CLASS IX>Chapter 15 - Improvement in Food Resources>Questions>Q 1

Which of the following conditions will give the most benefits? Why?
(a) Farmers use high-quality seeds, do not adopt irrigation or use fertilizers.
(b) Farmers use ordinary seeds, adopt irrigation and use fertilizer.
(c) Farmer uses quality seeds, adopt irrigation, use fertilizer and use crop protection measures.

MEDIUM

9th CBSE

IMPORTANT

SCIENCE TEXTBOOK FOR CLASS IX>Chapter 15 - Improvement in Food Resources>Questions>Q 1

Why should preventive measures and biological control methods be preferred for protecting crops?

MEDIUM

9th CBSE

IMPORTANT

SCIENCE TEXTBOOK FOR CLASS IX>Chapter 15 - Improvement in Food Resources>Questions>Q 2

What factors may be responsible for losses of grains during storage?

MEDIUM

9th CBSE