Improvement in Food Resources Test

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Improvement in Food Resources Test - 15

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Weekly Quiz Competition

Question 1
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Crop rotation helps increase crop harvest. In crop rotation

A
same crop is grown on different pieces of land

B
different crops are grown on different pieces of land

C
same crop is grown on the same piece of land within a year

D
different crops are grown on the same piece of land within a year

Solution

Crop rotation is the practice of growing different crops on the same piece of land within a year. The nutrient requirement of two crops is different. This puts less pressure on the nutrients and mineral resources present in soil. Hence, crop rotation increases soil fertility.

The correct answer is D.
Question 2
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Use the following information to answer the next question.

The production of milk by milch animals can be increased by increasing the lactation period of the females.

In cattle farming, which two breeds of cattle are selected for their longer lactation periods?

A
Jersey and Brown Swiss

B
Brown Swiss and Red Sindhi

C
Red Sindhi and Sahiwal

D
Sahiwal and Jersey

Solution

Jersey and Brown Swiss are exotic or foreign breeds of cattle. They are selected in cattle farming for their longer lactation periods.

Red Sindhi and Sahiwal are local breeds of cattle. They are selected for their resistance to diseases.

The correct answer is A.
Question 3
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Which of the following statements about the Italian variety of bees is incorrect?

A
They stay in their hives for very short period of time.

B
They have high honey collection capacity.

C
They breed well.

D
They sting less.

Solution

The Italian variety of bees stays in their hives for long periods of time.

The correct answer is A.
Question 4
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Which of the following characteristics is not desirable in the commercial production of broiler chicken?

A
Low maintenance requirement

B
Tolerance to high temperature

C
Production of large feathers

D
Reduced size of the bird

Solution

Broiler chicken is a chicken that is bred for its meat. Hence, the production of large feathers is not an economical or desirable trait in the commercial production of broiler chicken.

The correct answer is C.
Question 5
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Use the following information to answer the next question.

Modern fish culture techniques include composite fish culture system. In this system, different species of fish having different food habits are cultivated inside a pond.

Which of the following species of fish used in composite fish culture acts as a bottom feeder?

A
Catla

B
Silver carp

C
Rohu

D
Common carp

Solution

Mrigals and common carps act as bottom feeders in composite fish culture system.

The correct answer is D.
Question 6
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The process of hybridization involves the

A
crossing between genetically similar plants

B
crossing between genetically dissimilar plants

C
transfer of desirable genes from bacteria to plants

D
transfer of desirable genes from plants to bacteria

Solution

The process of hybridization involves the crossing between genetically dissimilar plants. This crossing can be intervarietal, interspecific, or intergeneric. Hybridization improves the variety of crops by introducing desired genes in them.

Hence,the correct answer is option B.
Question 7
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Fodder crops are used for providing food to livestock. Which of the following agronomic characteristics is a desirable characteristic in fodder crops?

A
Tallness and scarce branching

B
Tallness and profuse branching

C
Dwarfness and scarce branching

D
Dwarfness and profuse branching

Solution

Tallness and profuse branching are desirable agronomic characteristics in fodder crops. These crops are required to have more leaves and biomass.

Hence,the correct answer is option B.
Question 8
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Vermicompost is an example of manure. Which organism is used in the preparation of vermicompost?

A
Earthworm

B
Pila

C
Leech

D
Unio

Solution

Earthworms are used in the preparation of vermicompost. They decompose the organic waste present in compost pits and form nutrient-rich compost, which can then be added to soil to make it rich in nutrients.

The correct answer is A.
Question 9
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Green manures help in increasing the fertility of soil. Which of the following statements about green manure is correct?

A
Plants such as guar and sun hemp are used as green manure.

B
Green manure enriches the soil with hydrogen and oxygen.

C
Plants such as rose and lantana are used as green manure.

D
Green manure enriches the soil with zinc and copper.

Solution

During the preparation of green manure, leguminous plants such as guar and sun hemp are first sown and then mulched by ploughing. Rhizobium, which is a nitrogen fixing bacterium, is present in the root nodules of leguminous plants. It fixes nitrogen in soil. After the formation of green manure, soil is enriched with nitrogen and phosphorus.

The correct answer is A.
Question 10
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Which of the following statements about the difference between fertilizers and manures is correct?

A
Fertilizers decrease soil fertility in the long run, whereas long term use of manures does not affect soil fertility.

B
Fertilizers are made of organic matter, while manures are chemical in nature.

C
Fertilizers are poor in plant nutrients, while manures contain higher amount of plant nutrients.

D
Fertilizers increase the water-holding capacity of soil in the long run, whereas long term use of manures does not affect the water-holding capacity of soil.

Solution

Long term use of fertilizers decreases the amount of organic matter present in soil. As a result, the fertility of soil decreases. It also decreases the population of useful microorganism (that enrich the soil with nutrients) present in soil. Manures promote the growth of useful microorganisms in soil. They also add organic matter to soil, thereby increasing its fertility.

The correct answer is A.
Question 11
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Small reservoirs that store the run-off from small catchment areas are known as

A
dug wells

B
canals

C
tube wells

D
tanks

Solution

Tanks are built for intercepting and storing the run-off from small catchment areas.

The correct answer is D.

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Re-Attempt Weekly Quiz Competition

Improvement in Food Resources Test - 15

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Improvement in Food Resources Test - 15

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SHARING IS CARING

Question 1

same crop is grown on different pieces of land

different crops are grown on different pieces of land

same crop is grown on the same piece of land within a year

different crops are grown on the same piece of land within a year

Solution

Question 2

Jersey and Brown Swiss

Brown Swiss and Red Sindhi

Red Sindhi and Sahiwal

Sahiwal and Jersey

Solution

Question 3

They stay in their hives for very short period of time.

They have high honey collection capacity.

They breed well.

They sting less.

Solution

Question 4

Low maintenance requirement

Tolerance to high temperature

Production of large feathers

Reduced size of the bird

Solution

Question 5

Catla

Silver carp

Rohu

Common carp

Solution

Question 6

crossing between genetically similar plants

crossing between genetically dissimilar plants

transfer of desirable genes from bacteria to plants

transfer of desirable genes from plants to bacteria

Solution

Question 7

Tallness and scarce branching

Tallness and profuse branching

Dwarfness and scarce branching

Dwarfness and profuse branching

Solution

Question 8

Earthworm

Pila

Leech

Unio

Solution

Question 9

Plants such as guar and sun hemp are used as green manure.

Green manure enriches the soil with hydrogen and oxygen.

Plants such as rose and lantana are used as green manure.

Green manure enriches the soil with zinc and copper.

Solution

Question 10

Fertilizers decrease soil fertility in the long run, whereas long term use of manures does not affect soil fertility.

Fertilizers are made of organic matter, while manures are chemical in nature.

Fertilizers are poor in plant nutrients, while manures contain higher amount of plant nutrients.

Fertilizers increase the water-holding capacity of soil in the long run, whereas long term use of manures does not affect the water-holding capacity of soil.

Solution

Question 11

dug wells

canals

tube wells

tanks

Solution

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