agriculture MCQs – Page 262

Practise multiple-choice questions from agriculture for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

5221. Self incompatibility which is controlled by two genes is found in___________________?
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A. Solanaceae

B. None of the above

C. Gramineae

D. Cruciferae

5222. Soybean contains___________________?
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A. Typsin inhibitor

B. Goiterogens

C. Both A & B

D. Neither

5223. An individual lacking only one chromosome from the diploid set is referred as_________________?
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A. Nullisomic

B. Tetrasomic

C. Trisomic

D. Monosomic
5224. In pulses, limiting amino acids include__________________?
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A. Threamine

B. Lysine

C. Methionine

D. Tryptophan
5225. Discriminant function of plant selection was suggested by____________________?
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A. Kempt Horne (1957)

B. Griffing (1956)

C. Yates (1947)

D. Smith (1936)
5226. In barley, resistance to cereal leaf beetle is associated with_________________?
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A. High aspartic acid

B. High silica content

C. Waxiness of leaves

D. High benzol alcohol

5227. Blackeselee reported the first case of monoploid in__________________?
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A. Oat

B. Brassica

C. Rye

D. Datura
5228. In half diallel, total crosses among parents are equal to___________________?
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A. P (P-1)/2

B. P (P-1)

C. P (P+1)/2

D. P2

5229. Estimation of correlation form error variances and covariances is________________?
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A. Genotypic correlation

B. Simple correlation

C. Phenotypic correlation

D. Environmental correlation

5230. Amphimixis refers to_______________________?
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A. Sexual reproduction

B. None of the above

C. Apomixes

D. Asexual reproduction

5231. Protoandry is found in____________________?
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A. Maize

B. Barley

C. Wheat

D. Sorghum

5232. Specific combining ability is primarily a function of___________________?
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A. Dominance x dominance epistasis

B. Additive x dominance epistasis

C. All the above

D. Dominance variance

5233. RELPs, RAPD are helpful in___________________?
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A. Identify new gene

B. All the above

C. Gene mapping

D. Gene sequencing

5234. The term recurrent selection was coined by_________________?
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A. Hull (1945)

B. Garber (1955)

C. Hull (1950)

D. Hays (1919)

5235. Germplasm gene banks for different crop plants in world are about_____________________?
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A. 980

B. 1200

C. 1080

D. 1100

5236. The food in onion is stored in_________________?
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A. leaves

B. Scale leaves

C. Stem

D. Root

5237. Anthesis starts in Allium cepa at___________________?
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A. 5.00 pm

B. 3.00 pm

C. 7.00 am

D. 10.00 am

5238. Male sterility in flowering plants was first reported is__________________?
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A. Bateman (1952)

B. Stout (1917)

C. Braw baker (1958)

D. Koelreuter (1763)
5239. Genetic correlation between two variables may be due to___________________?
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A. Dominance

B. Selection differential

C. Peliotropy

D. Gene interaction

5240. Genetic male sterility is controlled by_________________?
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A. All the above

B. nuclear genes

C. Non alleleic genes

D. Allelic genes