plant breeding and genetics MCQs – Page 2

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

plant breeding and genetics Mcqs
21. 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

22. Soybean contains___________________?
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A. Typsin inhibitor

B. Goiterogens

C. Both A & B

D. Neither

23. 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
24. In pulses, limiting amino acids include__________________?
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A. Threamine

B. Lysine

C. Methionine

D. Tryptophan
25. 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)
26. 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

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

B. Brassica

C. Rye

D. Datura
28. 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

29. 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

30. Amphimixis refers to_______________________?
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A. Sexual reproduction

B. None of the above

C. Apomixes

D. Asexual reproduction

31. Protoandry is found in____________________?
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A. Maize

B. Barley

C. Wheat

D. Sorghum

32. 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

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

B. All the above

C. Gene mapping

D. Gene sequencing

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

B. Garber (1955)

C. Hull (1950)

D. Hays (1919)

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

B. 1200

C. 1080

D. 1100

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

B. Scale leaves

C. Stem

D. Root

37. 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

38. 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)
39. Genetic correlation between two variables may be due to___________________?
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A. Dominance

B. Selection differential

C. Peliotropy

D. Gene interaction

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

B. nuclear genes

C. Non alleleic genes

D. Allelic genes