PRACTICE TEST - 1 - CHAPTER 12

Welcome to your Ncert - class 9- science - Chapter 12 – Improvement in Food Resources 1

Which of the following states has the highest percentage of irrigated land?

Punjab

Himachal Pradesh

Rajasthan

Haryana

None

Why is dwarfness preferred in cereal crops?

They would be resistant to pests

They would consume less minerals

All of the above

They would provide more yield

None

What is hybridisation?

Introduction of new genes into a plant

Fusion between male and female gametes

Crossing between genetically dissimilar plants

None of the above

None

Which of the following is a food-fodder mixed farming system?

Growing crops which can be used as food and fodder by using more fertilizers.

Growing food crops alone

Growing fodder crops alone

Growing food crops and fodder crops in the same field

None

Crop rotation is employed for

Enhancing soil fertility

Community development

Increasing nitrogen content of soil

Checking soil erosion

None

The organic manure is considered better than fertilisers because

It is less rich in plant nutrient.

It decreases the water holding capacity of the soil.

It improves the texture of the soil.

It can be prepared in the factories.

None

What are genetically modified crops?

Plants containing genes that have been introduced into them

Plants which are crossed with plants of different genera

Plants having superior genes

None of these

None

What will improve the quantity of food production

Optimum use of land for agriculture

Pesticides

Education and guidance for consumers

Synthetic hormones

None

__________ is the practice of growing a series of different types of crops in the same area in subsequent seasons.

Soil erosion

Crop rotation

All of the above

Manure farming

None

10.

Identify the correctly matched pair.

Apiculture - Honey bee

Pisciculture - Silk moth

Sericulture - Fish

Aquaculture - Mosquito

None

11.

The method of incorporating desirable qualities in crop varieties is..

Multiple cropping

Intercropping

Crop- rotation

Hybridisation

None

12.

Which of the following characteristic can be obtained when quality breeding is done?

Higher yields of crop in a shorter period of time

Cropping without irrigation

Increased lifespan of crops by 10 years

Carrying out photosynthesis at night

None

13.

Berseem and Sudan grass are grown to be used as

Manure

Green manure

Food for livestock

Food for humans

None

14.

Which of the following statements are correct regarding mixed cropping?

(I) There is a definite pattern of sowing seeds.

(ii) It increases biodiversity.

(iii) It removes some nutrients specifically.

(iv) Outbreaks of pests and diseases can spread very rapidly.

(v) The crops with different maturation times are grown together.

(vi) Same fertilizers and pesticides are used for all crops.

(vii) The risk of total crop failure due to uncertain monsoon is reduced.

(i), (ii), (iv), (vii)

(ii), (v), (vi), (vii)

(iii), (iv), (v), (vi)

(i), (ii), (v), (vi)

None

15.

Which of the following methods of cultivation will result in the loss of soil fertility?

I.Crop rotation

II. Inter-cropping

III. Excessive use of chemical fertilizers

I and III only

I, II and Ill

I and II only

III only

None

16.

Which of the following is true for animal husbandry?

Animal husbandry is the management and care of farm animals by humans, in which genetic qualities and behaviour, considered to be advantageous to humans, are further developed.

Non of these

In addition to supplying milk, meat, eggs, wool and hides, animals, mainly bullocks, are the major source of power for farmers.

Both A and B

None

17.

Tallness and profuse branching are ideal for

Fodder crops

Both B and C

Wheat

Rice

None

18.

Mixed farming involves combination of _____ with crop production.

Bee keeping

Rearing of livestock

Hunting

Fishing

None

19.

_________ is growing of two or more crops simultaneously on the same piece of land in a definite pattern.

Intercropping

Terrace farming

Crop rotation

All of the above

None

20.

Rotation of crops is carried out to

Increase variation in the mineral content of soil

Increase convenience for the farmers

Increase diversity of plant habitats

Increase in nitrogen content of the soil

None

Chapter 5- The Fundamental Unit of Life

Chapter 6 - Tissues

Chapter 12 – Improvement in Food Resources

Curriculum

Ncert - class -9 - Biology

Chapter 5- The Fundamental Unit of Life

Chapter 6 - Tissues

Chapter 12 – Improvement in Food Resources

PRACTICE TEST – 1 – CHAPTER 12 – CLASS 9