Secondary nucleus in the embryo sac is:
A) Haploid
B) Diploid
C) Triploid
D) Hexaploid
Selfing in a plant will increase:
A) Heterozygosity
B) Homozygosity
C) Homogenecity
D) Heterogenecity
Single gene affecting more than one character is:
A) Polymorphism
B) Pleiotropy
C) Phenocopy
D) Complete penetrance
Specific combining ability of the parents should be high in order to develop:
A) Hybrids
B) Composites
C) Varieties
D) Synthetics
Spikelets are characteristic of the family:
A) Umbelliferae
B) Malvaceae
C) Leguminoceae
D) Gramineae
Sterility is most pronounced in the F1 generation following:
A) Intervarietal hybridization
B) Intravarietal hybridization
C) Intraspecific hybridization
D) Interspecific hybridization
Sterility of distant crosses can be overcome to produce hybrids by:
A) Pollen culture
B) Anther culture
C) Cell suspension culture
D) Embryo culture

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