Agriculture MCQs with Answers – Practice Online – Page 51

Question 1001 Water Management

Why is the capillary rise experiment performed in a glass tube of small diameter?

Correct answer D. It is easily visible

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Question 1002 Plant Breeding and Genetics

Many insect groups have developed resistance to DDT and other insecticides as a result of what?

Correct answer A. Gene mutation

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Question 1003 Water Management

What is the mass per unit volume of a liquid at standard temperature and pressure called?

Correct answer A. Mass density

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Question 1004 Plant Breeding and Genetics

In a dihybrid test cross of 1000 offspring, 748 are tall and hairy, 6 tall and smooth, 4 short and hairy and 242 short and smooth. What explains this ratio?

Correct answer D. Linkage and crossing over

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Question 1005 Water Management

What is protecting the face of an embankment against wave action with stone boulders called?

Correct answer A. Pitching

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Question 1006 Plant Breeding and Genetics

What is a species or plant type obtained by doubling the chromosomes of an F1 hybrid between two species called?

Correct answer C. Amphidiploid

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Question 1007 Water Management

What is the water that moves downward through the unsaturated zone above the water table called?

Correct answer D. Gravity water

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Question 1008 Water Management

What is the discharge of a well per unit drawdown, usually expressed in gallons or litres per minute, called?

Correct answer B. Specific capacity

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Question 1009 Plant Breeding and Genetics

Which of the following is not a technique in hybridisation?

Correct answer A. Inosculation

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Question 1010 Plant Breeding and Genetics

Which of the following is NOT an advantage of genetic engineering?

Correct answer C. The gene pool is maintained

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Question 1011 Water Management

What is the property of a saturated soil mass that allows it to transmit appreciable quantities of water called?

Correct answer C. Permeability

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Question 1012 Water Management

Which soil property indicates the volume of water that can be stored in a formation?

Correct answer A. Porosity

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Question 1013 Plant Breeding and Genetics

The number of linkage groups in an organism equals what?

Correct answer B. Haploid number of chromosomes

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Question 1014 Water Management

What percentage of the world’s total water is fresh water, mainly replenished by rain?

Correct answer B. 2.5%

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Question 1015 Plant Breeding and Genetics

When an albino maize plant (female) is crossed with a normal green plant (male), all the progeny are albino. Why?

Correct answer B. Plastids are inherited through the maternal parent

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Question 1016 Water Management

What is the estimated total quantity of water on Earth, which covers about 70% of its surface?

Correct answer C. 1.35x10^9 km3

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Question 1017 Plant Breeding and Genetics

Whose evolutionary ideas were close to those of Lamarck?

Correct answer B. Lysenko

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Question 1018 Water Management

Wilting point is the limit beyond which no water is available and the crop begins to suffer. At what level of available water does this point occur?

Correct answer D. 20% water available

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Question 1019 Plant Breeding and Genetics

Who proposed that organic evolution occurs through large, discontinuous variations?

Correct answer D. Hugo de Vries

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Question 1020 Plant Breeding and Genetics

On what basis does evolution proceed?

Correct answer A. Adaptations through generations

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