PRACTICE TEST - 1 - CHAPTER 12

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

Berseem and Sudan grass are grown to be used as

Food for livestock

Green manure

Food for humans

Manure

None

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 II only

III only

I, II and Ill

I and III only

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

Why is dwarfness preferred in cereal crops?

They would provide more yield

They would be resistant to pests

They would consume less minerals

All of the above

None

Crop rotation is employed for

Community development

Enhancing soil fertility

Increasing nitrogen content of soil

Checking soil erosion

None

What are genetically modified crops?

None of these

Plants which are crossed with plants of different genera

Plants having superior genes

Plants containing genes that have been introduced into them

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.

Both A and B

Non of these

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

None

Tallness and profuse branching are ideal for

Both B and C

Fodder crops

Rice

Wheat

None

What will improve the quantity of food production

Education and guidance for consumers

Synthetic hormones

Optimum use of land for agriculture

Pesticides

None

10.

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

Increased lifespan of crops by 10 years

Cropping without irrigation

Carrying out photosynthesis at night

Higher yields of crop in a shorter period of time

None

11.

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

12.

What is hybridisation?

Introduction of new genes into a plant

Fusion between male and female gametes

None of the above

Crossing between genetically dissimilar plants

None

13.

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

Punjab

Himachal Pradesh

Rajasthan

Haryana

None

14.

Mixed farming involves combination of _____ with crop production.

Hunting

Rearing of livestock

Fishing

Bee keeping

None

15.

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)

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

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

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

None

16.

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

Soil erosion

Manure farming

All of the above

Crop rotation

None

17.

Identify the correctly matched pair.

Pisciculture - Silk moth

Apiculture - Honey bee

Aquaculture - Mosquito

Sericulture - Fish

None

18.

Rotation of crops is carried out to

Increase variation in the mineral content of soil

Increase convenience for the farmers

Increase in nitrogen content of the soil

Increase diversity of plant habitats

None

19.

_________ 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

20.

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

Crop- rotation

Hybridisation

Intercropping

Multiple cropping

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