Improvement in Food Resources Test

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Improvement in Food Resources Test - 3

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Weekly Quiz Competition

Question 1
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Select the correct answer about manure.

(a) Manure contains large quantities of organic matter and small quantities of nutrients.
(b) It increases the water holding capacity of sandy soils.
(c) It causes water logging in clayey soil.
(d) Its excessive use pollutes environment because it is made up of animal excretory waste.

A
a and b

B
a and c

C
b and c

D
c and d

Solution

Option (c) and (d) are incorrect. The correct statements are:
In clayey soils, the large quantities of organic matter in the manure help in drainage and in avoiding water logging. Manure is prepared by the decomposition of animal excreta and plant waste. So, its use does not pollute the environment.
Question 2
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In which of the following plants are root nodules generally found?

A
Black pepper

B
Pea

C
Onion

D
Raddish

Solution

Rhizobia are soil bacteria that fix nitrogen after becoming established inside root nodules of legumes (Fabaceae). For example, pea plant.
Question 3
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Which is the improved hybrid variety of wheat?

A
Sona

B
Sonalika

C
PS-16

D
Paras

Solution

Sonalika is a wheat variety suitable for late sown and irrigated conditions. It gives an average yield of 36-40 qt/ha. The variety normally takes 126-134 days to mature. On maturity, the plants of the variety attain a height of 80-90 cm. Its protein content is 12-13 percent.
Question 4
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Directions For Questions

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Refer to the two group of crops shown above and select the wrong statements.

a. Rainy season is good for group A crops.
b. Group B crops are monsoon crops.
c. Group B crops depend upon irrigation sources.
d. October to March is the best period for group A crops.

A
b and d

B
a and b

C
a and c

D
b and c

Solution

Group B crops are rabi crops which grows best from October to March, thus they are not called monsoon crops. Optimum months for growing group A crops are from June to September.
Question 5
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Directions For Questions

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Directions: Refer to the above graph and choose the incorrect statement from the options given below.

a: In season A, more irrigation is required.
b: In season B, no irrigation is required.
c: Plants produce more sugar in season B.
d: Translocation is higher in season A.

A
a and d

B
a and c

C
b and c

D
b and d

Solution

Both b and c are incorrect. In B, transpiration rate is less. Therefore, B is winter season. Though water loss is less in winters, yet the crop requires irrigation to fulfill the water demand of crop. Thus, it would be incorrect to say that plants do not require irrigation in winters. Plants produce less sugar in winters.
Question 6
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Directions For Questions

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Refer to the diagram given above and choose the incorrect statement about X from the following.

A
Chemicals against X do not damage the crops.

B
X does not form symbiotic association with plant roots.

C
X should be removed after the flower formation.

D
X is removed using khurpi.

Solution

X is weed. Weeds should be removed before the flowering season because if they flower, they would increase in number, which is harmful for crops.
Question 7
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Refer to above diagram and choose the option which is correct for X.

A
X leads to 100% utilisation of water.

B
X is more useful for uneven land.

C
X utilises human or animal labour.

D
X irrigates more area.

Solution

X is the drip system. In Drip system, the water gets sprinkled drop by drop just at the position of the roots. It is the best technique for watering fruit plants, gardens and trees.The system provides water to plants drop by drop, so the water is not wasted at all and it is 100% utilised. It is a boon in regions where availability of water is poor.
Question 8
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Directions For Questions

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The graph represents water holding capacity of different soils. Which type of soil would be best suited for sprinkler system?

A
Loamy soil

B
Sandy soil

C
Clayey soil

D
Silt

Solution

Sandy soil has water holding capacity of 29.40%. Sprinkler is very useful for sandy soil as it has poor water retaining capacity. Sprinklers are very beneficial as they irrigate plants from top to bottom.
Question 9
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Directions For Questions

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Refer to the flow chart given above and choose the correct sentence.

A
A : Used for storing small quantities of grains

B
A: Used for performing combined harvesting and threshing

C
C : Done in huge ovens

D
B: Used in household storage

Solution

Neem leaves are widely used to repel the pest from storage spaces. This is specifically useful in household storage.
Question 10
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Which of the following practices is/are suitable to farmers with fewer resources?

A. Select a short term crop
B. Cultivate commercial crop
C. Adopt drip irrigation system
D. Crop holiday

A
A and C

B
A, B and C

C
A and D

D
C and D

Solution

Short term crops provide the farmer with cash flow capabilities and take care of day-to-day operations cost of the farm. In cash or commercial crop farming, crops are grown for the purpose of sale or to earn profits. Drip irrigation is a form of irrigation that saves water and fertiliser by allowing water to drip slowly to the roots of many different plants.
Question 11
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Colchicine is a chemical substance used to bring about which of the following processes artificially?

A
Polyploidy

B
Induced mutation

C
Intervarietal hybridisation

D
Genetic modification

Solution

Colchicine is also used for inducing polyploidy in plant cells during cellular division by inhibiting chromosome segregation during meiosis. Half the resulting gametes, therefore, contain no chromosomes, while the other half contains double the usual number of chromosomes (i.e. diploid instead of haploid, as gametes usually are) and lead to embryos with double the usual number of chromosomes (i.e. tetraploid instead of diploid).
Question 12
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Organic farming is the technique of raising crops through the use of which of the following?

A
Manure

B
Bio-fertiliser

C
Resistant varieties

D
All of these

Solution

Organic farming is an integrated farming system that strives for sustainability, the enhancement of soil fertility and biological diversity by use of manures, bio-fertilisers and resistant varieties. It prohibits the use of synthetic pesticides, antibiotics, synthetic fertilisers, genetically modified organisms, and growth hormones.
Question 13
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Which of the following statements is incorrect?

A
Broiler chickens are fed with vitamin rich supplementary feed

B
Egg-layers are fed with protein rich feed with adequate fat.

C
Appropriate vaccination can prevent the occurrence of infectious diseases.

D
Nutritional deficiency can lead to diseases in the poultry fowl.

Solution

The ration (daily food requirement) for broilers is protein rich with adequate fat. Other three options are correct.
Question 14
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Capture fishery and culture fishery are the two types of fisheries. All of the following are the characteristics of capture fishery, except that

a. it is a method of obtaining fish from the natural resources
b. there is no seeding and raising of fish
c. it is undertaken mostly inland and near the seashore

A
Only a

B
Only a and b

C
Only c

D
Only b and c

Solution

Capture fishery refers to all kinds of harvesting of naturally occurring living resources in both marine and freshwater environments. It is undertaken in both inland and marine waters.
Question 15
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The indigenous breeds of poultry are hardy and possess natural immunity against common diseases. Which of the following is not an indigenous breed of poultry?

A
Aseel

B
Busra

C
White leghorn

D
Chittagong

Solution

White leghorn is not an indigenous breed of poultry. It is an exotic breed of poultry producing long white eggs. Due to its small size, it needs low maintenance.
Question 16
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Which of the following common diseases of cattle causes irritation, blisters and eruptions on the skin surface?

A
Cowpox

B
Foot-and-mouth disease

C
Rabies

D
Dermatitis

Solution

Dermatitis causes irritation, blisters and eruptions on the skin surface. It usually involves itchy, dry skin or a rash on swollen, reddened skin. Or it may cause the skin to blister, ooze, crust or flake off.
Question 17
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The levels of which of the following vitamins are kept high in poultry feed?

A
A and B

B
B and C

C
C and D

D
A and K

Solution

Poultry animals generally suffer from night blindness (deficiency of vitamin A) and haemorrhage (deficiency of vitamin K). So the poultry feed is kept rich in these vitamins.
Question 18
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Given below are statements about the harmful effects of weeds on crop plants.

(i) They interfere in harvesting.
(ii) They help crop plants to grow in a healthy way.
(iii) They compete with crop plants for water, nutrients, space and light.
(iv) They affect plant growth.

Choose the correct statement(s).

A
(i), (ii), (iii) and (iv)

B
(iii) only

C
(iii) and (iv)

D
(i), (iii) and (iv)

Solution

Weeds compete for food, space and light with the main crop.
Weeds germinate and grow faster, flower early, mature early than the cultivated crop.
Thus, weeds take up all the nutrients from soil, leaving the main crop weak, resulting in low yield.
Question 19
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What is the crossing between two species of the same genus called?

A
Intravarietal hybridisation

B
Intergeneric hybridisation

C
Intrageneric hybridisation

D
Intervarietal hybridisation

Solution

Intrageneric hybridisation involves crosses between two individuals of different species belonging to the same genera. It is used to produce resistant varieties from diseases, frost or drought.
Question 20
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Refer to the graph given below.

Choose the incorrect statement from the options given below:

A
The soil of plot B will be rich in humus content.

B
The soil of plot A will be rich in humus content

C
The chemical composition of the soil in plot B is likely to be damaged with time.

D
There will be no harm to the soil texture of plot A.

Solution

Plot B is supplied with chemical fertilisers. Fertilisers do not make the soil rich in humus. Instead, manures enrich the soil with humus.