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MCQs 1: The variety of genes and genotypes found in a particular crop special are_____________________?

Genetic diversity Genetic erosion Gene sanctuaries Field gene banks
Answer Explanation

MCQs 2: Primitive cultivars which are selected and cultivated by farmers for many years are___________________?

teriary gene pool Obsolete cultivars Land races Modern cultivars
Answer Explanation

MCQs 3: Gradual reduction on genetic variability due to elimination of various () is called_______________________?

Centers of diversity Land races Genetic erosion Genetic diversity
Answer Explanation

MCQs 4: Allogamy is the common form of________________________?

Inbreeding Out breeding Syn breeding All the above
Answer Explanation

MCQs 5: Which generate variability_________________?

Mitosis Meiosis Peleiotropy None of the above
Answer Explanation

MCQs 6: The term mitosis was coined by__________________?

Rimpu (1890) Nilson (1900) De Vilmorin (1856) Flemming (1882)
Answer Explanation

MCQs 7: Development of embryo from egg cell without fertilization is known as___________________?

Apogamy Parthenogenesis Apospory Autogamy
Answer Explanation

MCQs 8: Self pollination is associated with__________________?

Herkogamy Dichogamy Chasmogamy Homogamy
Answer Explanation

MCQs 9: Mating system in which each female gamete () with every male gamete is known as____________________?

Genetic assortative mating Genetic disassortative mating Random mating None of the above
Answer Explanation

MCQs 10: Male sterility in flowering plants was first reported is__________________?

Bateman (1952) Stout (1917) Koelreuter (1763) Braw baker (1958)
Answer Explanation

MCQs 11: Pollen sterility which is controlled by both cytoplasmic and nuclear genes is known as___________________?

GMS CMS CGMS all the above
Answer Explanation

MCQs 12: Self incompatibility which is controlled by single gene found in some species of__________________?

Cruciferae Solanaceae Leguminosae All the above
Answer Explanation

MCQs 13: Diocious plant is____________________?

Papaya Datepalm Hemp All the above
Answer Explanation

MCQs 14: Rice flowers have___________________?

Six stamens Eight stamens Four stamens None of the above
Answer Explanation

MCQs 15: Anthesis starts in wheat at__________________?

10.00 am 5.20 pm 1.15 pm 7.00 am
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MCQs 16: Genetic male sterility is controlled by_________________?

Allelic genes Non alleleic genes nuclear genes All the above
Answer Explanation

MCQs 17: Cytoplasmic genetic male sterility was first discovered by___________________?

Jones and Davies (1944) Devaries and Correns (1900) Bruce and Keeble (1908) Nilson (1900)
Answer Explanation

MCQs 18: Protoandry is found in____________________?

Wheat Sorghum Maize Barley
Answer Explanation

MCQs 19: RELP’s, RAPD are helpful in___________________?

Gene sequencing Gene mapping Identify new gene All the above
Answer Explanation

MCQs 20: Prepotency increase with increase in_______________?

Hetrozygosity Homozygosity Homogeneity All the above
Answer Explanation

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