plant breeding and genetics MCQs – Page 12

Practise focused plant breeding and genetics questions with marked answers for exam preparation and subject revision.

plant breeding and genetics Mcqs
221. The spread of genes from one breeding population to another by migration which may result in changes in gene frequency is called__________________?
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A. Gene flow

B. Genetic drift

C. Gene frequency

D. None of the above

222. Who gave the principle that man tends to multiply faster than food supply________________?
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A. Mendel

B. Mathis

C. Haldane

D. Darwin

223. A polyploidy species with genomes derived from the same original species is an_________________?
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A. Allopolyploidy

B. Autopolyploid

C. Annapolis

D. Amphidiploids

224. Edible part of pomegranate is____________________?
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A. juicy epicure

B. juicy test

C. Monocarp

D. juicy hairs

225. Which of the cell organelle is considered to be rich in catabolic enzymes_____________________?
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A. Lysosome

B. Mitochondria

C. Endoplasmic reticulum

D. Golgi bodies

226. DNA is genetic material was first discovered by____________________?
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A. Attmann (1889)

B. Sressler (1968)

C. Crick (1953)

D. Avery et al (1944)
227. The protoplasm is________________?
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A. Solution

B. Semi-solid

C. Crysto colloidal solution

D. Colloidal solution

228. In potato food is stored in__________________?
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A. Shoot

B. Flowers

C. Root

D. Leaves

229. Winter beats are grown in___________________?
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A. Canada

B. Mexico

C. Iran

D. India

230. The organic evolution look place about__________________?
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A. Still occurring

B. 200,000,000 ears

C. 100,000,000 years

D. 300,000,000 years

231. Who coin the term genetic load _____________?
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A. Hardy (1908)

B. Ford (1940)

C. Muller (1950)

D. Satisbury (1940)

232. Selenium unigram is used as__________________?
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A. In lowering blood pressure

B. Cardio vascular stimulant

C. All the above

D. In breaking down of cholesterol

233. Chemically DNA differs from RNA by __________________?
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A. Thymine present in DNA and Uralic in RNA

B. Deoxyribose in DNA and ribose in RNA

C. Deoxyribose and thymine is present in DNA and ribose and Ural in RNA

D. Ribose and thymine in DNA and deoxyribose and uracil in RNA

234. The chromosome number of human race is__________________?
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A. 41

B. 46

C. 44

D. 48

235. In a population gene frequencies remain constant when there is_________________?
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A. Selective mating

B. Random mating

C. Iubreeding

D. Out breeding

236. Which of the following is not a fruit____________________?
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A. Potato

B. Muskmelon

C. Bitter gourd

D. Tomato

237. Srought is indicated by__________________?
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A. Increase in proline level

B. leaf rolling

C. all the above

D. Increase in ethylene level

238. Heterosis can be fixed by___________________?
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A. Asexual reproduction

B. Apomixis

C. Polyploidy

D. All the above
239. In wheat, example of durable insect resistance includes resistance to___________________?
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A. Green bugs

B. All the above

C. Hessian fly

D. Stem saw fly

240. The name Suicide bag is given to___________________?
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A. Lysosmes

B. Centrosomes

C. Ribosomes

D. Microsomes