NCERT Solutions for Class 9 Science Chapter 15: Improvement In Food Resources

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The NCERT Solutions for Class 9 Science Chapter 15 Improvement In Food Resources are included in the article below. Some of the important concepts of Class 9 Science Chapter 15 Improvement in Food Resources are:

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NCERT Solutions for Class 9 Science Chapter 15

NCERT Solutions

Important Topics for Class 9 Science Chapter 15 Improvement in Food Resources

Food is an essential resource significant for all living beings. It provides nutrients like carbohydrates, vitamins, protiens and minerals. There are various sources of food such as agriculture and animal husbandry.

Artificial Hybridisation

Artificial hybridization is expressed as a method of usage of selective pollen grains to further hold pollination and fertilization. It comprises crossing of several genera and species in order to achieve a specific product.

In order to bring artificial hybridization in effect, these two steps are followed:

Emasculation
Bagging

Nutrient Management

Nutrient management is a procedure that assists in controlling the amount, source, and timing of nutrient application in order to minimize nutrient losses and simultaneously escalate agricultural output.

Example: State the importance of Nutrient Management.

Solution: The importance of Nutrient Management is:

Plant nutrients can potentially pollute waterways. This is where nutrient management assists the process of minimizing damage.
Nutreint Management actively elevates plant productivity.
It also boosts soil fertility.
Nutrient Management helps promote carbon sequestration, simultaneously preventing the degradation of soil, ecosystem, and overall loss of nutrients from the soil.

Also Read:

Unit Related Links
Improvement in Food Resources	Organic and Inorganic Fertilizers	Weed Crop Protection
Types of waste	Biodegradable and Non-biodegradable Substances	Cattle Farming
Storage of Grains	Agriculture Fertilizers	Difference Between Micronutrients and Macronutrients
Plant Breeding	Biofortification	Difference between Fertilizers and Manure
Difference between Compost and Vermicompost	Crop Production	Agriculture Seeds Selection Sowing

Also Read:

Important Science Study Guides
Difference between in biology	Physics Constants	Named Reactions
Difference between in chemistry	Difference between in physics	Periodic Table

CBSE X Related Questions

1.
When an element 'X' reacts with water, it starts floating. Identify the element 'X':
- Potassium
- Calcium
- Sodium
- Iron
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2.
When you look at an object very close to your eyes, the:
- Ciliary muscles of your eye contract and the eye lens becomes thick.
- Ciliary muscles of your eye get relaxed and the eye lens becomes thick.
- Ciliary muscles of your eye contract and the eye lens becomes thin.
- Ciliary muscles of your eye get relaxed and the eye lens becomes thin.
View Solution
3.
(a) Study the given electric circuit in which 2 A electric current is flowing between points X and Y.

(i) Using the battery, key, voltmeter and ammeter in this given electric circuit, redraw a circuit diagram in which 2 \(\Omega\) and 4 \(\Omega\) resistors are connected between X and Y in parallel combination.
(ii) Circuit drawn by you, in which resistors are connected in parallel combination, calculate the electric current flowing through 4 \(\Omega\) resistor.
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4.
Sex is determined by different factors in various species. However, in human beings, it is determined genetically. Which amongst the following option(s) is/are correct for human beings ?
Gamete carrying X chromosome from female parent.
Gamete carrying X chromosome from male parent.
Gamete carrying Y chromosome from male parent.
- (ii) and (iii)
- (i) only
- (i) and (iii)
- (iii) only
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5.
Identify the part that controls the closing and opening of the stomatal pore in leaves of plants. Select the correct option.
- Stomata
- Epidermal cells
- Guard cells
- Chloroplasts
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6.
(i) \( \text{AgNO}_3 + \text{NaCl} \rightarrow \text{NaNO}_3 + \text{AgCl} \)
(ii) \( \text{K}_2\text{SO}_4 + \text{BaCl}_2 \rightarrow \text{BaSO}_4 + 2\text{KCl} \)
Which of the following options clearly describes both the reactions?
- (i) is double displacement, (ii) is displacement reaction.
- Both, (i) and (ii) are displacement reactions and precipitation reactions.
- Both, (i) and (ii) are double displacement reactions and precipitation reactions.
- (i) is displacement, (ii) is double displacement reaction.
View Solution