To which enzyme class do racemases belong?
Correct answer D. Isomerases enzyme
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Agriculture MCQs
Page 88 of Agriculture multiple-choice questions with answers. Tap an option to check yourself.
Page 88 of 135
To which enzyme class do esterases, proteinases and acid and alkaline phosphatases belong?
Correct answer B. Hydrolase enzymes
What is the method in which several scions with wedge-shaped bases are inserted between the bark and the wood called?
Correct answer C. Bark grafting
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In which fruit is cleft grafting most successful?
Correct answer B. Apple
Cytochrome oxidase and alcohol dehydrogenase are examples of which class of enzymes?
Correct answer A. Oxidoreductases
Which bacteria produce toxins that cause food poisoning?
Correct answer D. Both A and B
In which layout are citrus orchards usually planted?
Correct answer A. Square system
How are citrus rootstock species propagated?
Correct answer C. Seeds
When sugars are heated under controlled conditions without water, they form anhydro sugars that polymerise to give characteristic flavours and brown pigments. What is this process called?
Correct answer D. Caramelisation
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What soil pH range can citrus trees tolerate?
Correct answer B. 5.5-8.5
When fresh meat is cut in a butcher’s shop, what colour does the newly exposed surface turn on contact with oxygen?
Correct answer B. Bright red
Which part of a grafted plant forms the top and provides the fruit-bearing surface?
Correct answer B. Scion
What are deteriorative changes arising from within the food itself called?
Correct answer A. Autolysis
What is the process of joining a scion to a rootstock so that the cambium of both is in firm contact and forms new tissue called?
Correct answer A. Grafting
How are lime juice, lemon juice and pickles classified?
Correct answer A. High acid foods
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In species with long, flexible branches, what is the layering method called where the shoot is covered with soil at several points to root in more than one place?
Correct answer C. Serpentine layering
What are foods with a pH below 3.7 called?
Correct answer A. High acid foods
By what other name is air layering commonly known?
Correct answer A. Gootee
Which of these are horticultural uses of ethylene?
Correct answer D. All of the above
What are foods with a moisture content of about 80 to 90% called?
Correct answer C. Perishable foods