PRACTICE TEST - 1 - CHAPTER 12

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

Identify the correctly matched pair.

Apiculture - Honey bee

Pisciculture - Silk moth

Sericulture - Fish

Aquaculture - Mosquito

None

What is hybridisation?

Crossing between genetically dissimilar plants

Introduction of new genes into a plant

None of the above

Fusion between male and female gametes

None

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

Crop- rotation

Intercropping

Multiple cropping

Hybridisation

None

Rotation of crops is carried out to

Increase in nitrogen content of the soil

Increase variation in the mineral content of soil

Increase convenience for the farmers

Increase diversity of plant habitats

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.

Non of these

Both A and B

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

None

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

Growing food crops and fodder crops in the same field

Growing fodder crops alone

Growing food crops alone

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

None

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

Himachal Pradesh

Haryana

Rajasthan

Punjab

None

Berseem and Sudan grass are grown to be used as

Food for humans

Manure

Food for livestock

Green manure

None

What are genetically modified crops?

Plants which are crossed with plants of different genera

None of these

Plants having superior genes

Plants containing genes that have been introduced into them

None

10.

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)

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

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

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

None

11.

What will improve the quantity of food production

Pesticides

Education and guidance for consumers

Optimum use of land for agriculture

Synthetic hormones

None

12.

__________ 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

13.

The organic manure is considered better than fertilisers because

It can be prepared in the factories.

It is less rich in plant nutrient.

It decreases the water holding capacity of the soil.

It improves the texture of the soil.

None

14.

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 and II only

III only

I, II and Ill

None

15.

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

All of the above

Terrace farming

Intercropping

Crop rotation

None

16.

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

Carrying out photosynthesis at night

Cropping without irrigation

None

17.

Tallness and profuse branching are ideal for

Wheat

Fodder crops

Rice

Both B and C

None

18.

Why is dwarfness preferred in cereal crops?

They would provide more yield

They would be resistant to pests

All of the above

They would consume less minerals

None

19.

Crop rotation is employed for

Community development

Increasing nitrogen content of soil

Checking soil erosion

Enhancing soil fertility

None

20.

Mixed farming involves combination of _____ with crop production.

Hunting

Fishing

Bee keeping

Rearing of livestock

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