PRACTICE TEST - 1 - CHAPTER 12

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

Crop rotation is employed for

Checking soil erosion

Enhancing soil fertility

Community development

Increasing nitrogen content of soil

None

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

Hybridisation

Intercropping

Multiple cropping

Crop- rotation

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

Mixed farming involves combination of _____ with crop production.

Fishing

Hunting

Rearing of livestock

Bee keeping

None

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

Intercropping

Crop rotation

All of the above

Terrace farming

None

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.

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

Non of these

None

Identify the correctly matched pair.

Sericulture - Fish

Pisciculture - Silk moth

Aquaculture - Mosquito

Apiculture - Honey bee

None

The organic manure is considered better than fertilisers because

It decreases the water holding capacity of the soil.

It improves the texture of the soil.

It can be prepared in the factories.

It is less rich in plant nutrient.

None

Berseem and Sudan grass are grown to be used as

Food for humans

Food for livestock

Manure

Green manure

None

10.

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

Growing fodder crops alone

Growing food crops and fodder crops in the same field

Growing food crops alone

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

None

11.

What will improve the quantity of food production

Optimum use of land for agriculture

Synthetic hormones

Education and guidance for consumers

Pesticides

None

12.

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

Himachal Pradesh

Rajasthan

Haryana

Punjab

None

13.

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

Higher yields of crop in a shorter period of time

Increased lifespan of crops by 10 years

Cropping without irrigation

Carrying out photosynthesis at night

None

14.

Tallness and profuse branching are ideal for

Wheat

Both B and C

Fodder crops

Rice

None

15.

__________ 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

16.

What is hybridisation?

Fusion between male and female gametes

Introduction of new genes into a plant

Crossing between genetically dissimilar plants

None of the above

None

17.

Why is dwarfness preferred in cereal crops?

All of the above

They would provide more yield

They would be resistant to pests

They would consume less minerals

None

18.

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

III only

I, II and Ill

I and III only

I and II only

None

19.

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.

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

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

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

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

None

20.

Rotation of crops is carried out to

Increase convenience for the farmers

Increase variation in the mineral content of soil

Increase in nitrogen content of the soil

Increase diversity of plant habitats

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