PRACTICE TEST - 1 - CHAPTER 12

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

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, II and Ill

III only

I and II only

I and III only

None

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

Rajasthan

Himachal Pradesh

Punjab

Haryana

None

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

Carrying out photosynthesis at night

Cropping without irrigation

Higher yields of crop in a shorter period of time

Increased lifespan of crops by 10 years

None

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

Hybridisation

Intercropping

Crop- rotation

Multiple cropping

None

What are genetically modified crops?

Plants which are crossed with plants of different genera

Plants having superior genes

Plants containing genes that have been introduced into them

None of these

None

What will improve the quantity of food production

Pesticides

Optimum use of land for agriculture

Synthetic hormones

Education and guidance for consumers

None

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

All of the above

Soil erosion

Manure farming

Crop rotation

None

Why is dwarfness preferred in cereal crops?

They would be resistant to pests

They would consume less minerals

They would provide more yield

All of the above

None

The organic manure is considered better than fertilisers because

It improves the texture of the soil.

It is less rich in plant nutrient.

It can be prepared in the factories.

It decreases the water holding capacity of the soil.

None

10.

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

All of the above

Crop rotation

Intercropping

Terrace farming

None

11.

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

12.

Crop rotation is employed for

Community development

Enhancing soil fertility

Increasing nitrogen content of soil

Checking soil erosion

None

13.

Identify the correctly matched pair.

Sericulture - Fish

Pisciculture - Silk moth

Apiculture - Honey bee

Aquaculture - Mosquito

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.

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

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

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

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

None

15.

Berseem and Sudan grass are grown to be used as

Food for humans

Manure

Green manure

Food for livestock

None

16.

Tallness and profuse branching are ideal for

Fodder crops

Both B and C

Wheat

Rice

None

17.

Mixed farming involves combination of _____ with crop production.

Rearing of livestock

Bee keeping

Hunting

Fishing

None

18.

What is hybridisation?

None of the above

Crossing between genetically dissimilar plants

Introduction of new genes into a plant

Fusion between male and female gametes

None

19.

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.

Non of these

Both A and B

None

20.

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

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.

Growing fodder crops alone

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