plant breeding and genetics MCQs – Page 13

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

plant breeding and genetics Mcqs

241. The membrane which surrounds the___________________?
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A. Cutoplasm

B. Chloroplast

C. Vacuole

D. Nucleus

242. An exce4ption of Mendels law is______________________?
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A. Purity of gametes

B. Independent assortment

C. Dominance

D. Liukage

243. Single celled plants are called__________________?
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A. B. Protest

B. Protophyta

C. Protozoa

D. Prokaryotes

244. If the frequency of a dominant phenotype in a stable population in 75% the frequency of the dominant allele in that population is____________________?
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A. 25%

B. 40$

C. 75%

D. 50%

245. The ATP formed in__________________?
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A. Mitochondna

B. Chloroplast

C. RNA

D. Golgi bodies

246. The policy level of commercially cultivated seedless watermelon is__________________?
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A. Triploid

B. Diploid

C. Monoploid

D. Tetraploid

247. One of the persons whose evolutionary ideas were close to that of Laraarcd was____________________?
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A. Lysendo

B. Weismann

C. H be vnes

D. Vavilow

248. The centre of origin of sunflower is__________?
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A. West Africa

B. South America

C. East Asia

D. North America

249. The giant chromosomes of Drosophila are found in_____________________?
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A. Muscles

B. Salivary glands

C. Ovaries

D. Testes

250. One of the following is not an advantage of genetic engineering___________________?
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A. Improvement of crop can take place

B. The gene pool is maintained

C. Microbes act as biological factories

D. Genetic error can be rectified

251. Bacteria, single celled animals and plants are grouped to gather as_______________________?
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A. Protozoa

B. Prokaryotes

C. Protista

D. Prototypal

252. Tomato would not have turned red if__________________?
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A. They were kept at the bottom layer of box

B. Less heyhad been put in the box

C. They were mixed with ripe apples

D. There were no ripe apples in the box

253. The seed of sunflower is called_________?
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A. Caryopsis

B. Samara

C. Phyxis

D. Achene

254. The geometrical device that helps in visnalizing all the possible combinations of male and female gametes known as____________________?
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A. Bateson square

B. Punneu square

C. Morgan square

D. Mendel square

255. Ribosomes are important because they help in __________________?
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A. Respiration

B. Growl

C. Movement

D. Protein synthesis

256. Heterosis results due to____________________?
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A. Dominance

B. Epistasis

C. Overdominance

D. All the above

257. Carbohydrates synthesis is carried out by ___________________?
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A. Mitochondria

B. Plastid

C. Golgi bodies

D. Ribosomes

258. Pedigree selection is used in____________________?
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A. Cross pollinated plants

B. Self pollinated plants

C. For crosses at intervener level

D. Plant difficult to hybridized

259. Maize has 10 pairs of chromosomes. how many linkage groups will be present if all the genes are mapped__________________?
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A. 40

B. 10

C. 15

D. 20

260. Duplication of chromosomes occurs during_________________?
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A. None of the above

B. Mitosis only

C. Mitosis and meiosis

D. Meiosis

Showing 241 to 260 of 408 mcqs