plant breeding and genetics MCQs – Page 6

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

plant breeding and genetics Mcqs
101. Gradual reduction on genetic variability due to elimination of various () is called_______________________?
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A. Land races

B. Genetic diversity

C. Centers of diversity

D. Genetic erosion
102. Allogamy is promoted by____________________?
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A. Male sterility

B. Dichiny

C. Herkogamy

D. All the above
103. A gene which exhibits higher mutation rate than others is referred as___________________?
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A. Mutator gene

B. Antimutalor gene

C. Mutable gene

D. Hot spot

104. Red flower pea plant is crossed with the white flowered pea plant, F1 is red; with flower color is ______________________?
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A. Recessive

B. Unexpressive

C. Dominant

D. Non-genetic

105. Heat, cold and frost resistance ideotype have been developed in_____________________?
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A. None of the above

B. Cereals

C. Millet

D. Pulses

106. Rum is distilled from____________________?
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A. Unmalted cereals

B. Unmalted potatoes

C. Unrefined products of sugarcane

D. Fermented fruit juice

107. When pollination and fertilization occur in unopened flower bud it is known as__________________?
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A. Hamogamy

B. All the above

C. Chasmogamy

D. Cleistogamy
108. The term mitosis was coined by__________________?
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A. Rimpu (1890)

B. Nilson (1900)

C. De Vilmorin (1856)

D. Flemming (1882)
109. Genetic selection was proposed by_________________?
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A. Hull (1945)

B. Stadler (1944)

C. Richy (1927)

D. East (1920)

110. Concept of generation means analysis was developed by_______________________?
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A. Kempthome (1957)

B. Hayman (1958)

C. Griffing (1965)

D. Jink (1950)

111. In green vegetables, the limiting amino acids is__________________?
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A. Lysine

B. Arginine

C. Methionine

D. Trytophan

112. Primitive cultivars which are selected and cultivated by farmers for many years are___________________?
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A. Land races

B. Modern cultivars

C. Obsolete cultivars

D. teriary gene pool

113. Seeds which dried at low moisture content and stored at low temperature without losing their viability are__________________?
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A. Recalcitrant seeds

B. Orthodox seeds

C. Certified seeds

D. Active seeds

114. Concept of ideotype was coined by__________________?
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A. Oat

B. Rice

C. Sorghum

D. Wheat
115. In forage, crops, ideal plant type consists of ______________________?
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A. Late resistance to disease

B. Dwarf, late green

C. Tall, leafy, high leaf/stem ratio

D. Dwarf stature

116. Plasmids are discovered by___________________?
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A. Beadle & Tatum

B. Watson & Crick

C. None of the above

D. Iscki & Sakai
117. Concept of path coefficient analysis was given by_________________?
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A. Smith (1936)

B. Wright (1921)

C. Mather (1949)

D. Fisher (1918)

118. Gamatophytic system of self incompatibility was first discovered by____________________?
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A. Bresbaker (1958)

B. East and Mangelsdref (1925)

C. Frankel (1977)

D. Hughes and Babceek

119. Self pollination is associated with__________________?
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A. Herkogamy

B. Dichogamy

C. Chasmogamy

D. Homogamy
120. Difference between mean phenotypic value of the progeny of selected plants and the parental population is known as__________________?
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A. Coheritability

B. Genetic advance

C. Genetic gain

D. Heritability