Certification is not required for
A. Foundation seed
B. Breeder seed
C. Certified seed
D. None of these
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During differentiation, cells with the same DNA
A. Must develop similarly
B. Divide at equal rate
C. Contain different genes
D. May transcribe different genes
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The types of gametes will be produced by a species of genotype TtRr are
A. TR, Tr, tR, tr
B. tR, Tr
C. TR, tr
D. TR, tR
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Physical basis of life is
A. Cell
B. Mitochondria
C. Protoplasm
D. Nucleus
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The endosperm in which nuclear divison is accompanied by cell wall formation is
A. Cellular endosperm
B. Nuclear endosperm
C. Helobial endosperm
D. Both A and B
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C-value paradox means
A. Genome complexity depends on genome size
B. Genome complexity is independent of genome size
C. Inactivation of one X-chromosome in females
D. None of the above
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The term Germplasm was given by
A. Johansen
B. Betson
C. Weismann
D. Muller
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The macronutrients are the elements which are
A. Not at all required by the plants
B. Harmful to the plants
C. Required by the plants in traces
D. Required by the plants in large quantities
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In sweet pea gene C or P alone produces white flower, where as both C and P are needed to produce purple coloured flower. In a particular cross between two white flowered plants the offsprings were one half purple and one-half white. The possible genotypes of the parents is
A. CcPp × ccPp
B. CCpp × ccPP
C. ccPp × CCpp
D. Ccpp × ccPp
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Accumulation of food in assimilatory cells results in
A. increase in the rate of photosynthesis
B. decrease in the rate of photosynthesis
C. either increase or decrease
D. None of the above
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Helicoids inflorescence is found in
A. Rice
B. Wheat
C. Maize
D. Potato
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CTCRI located at
A. Hyderabad
B. Trivandrum
C. Nagpur
D. Almora
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Consider the following statements with regard to the functions of the centromere in the chromosome.
1. Centromeres are the centres of movement of the chromatids or chromosomes during anaphase separation.
2. Acentric chromosomes lack the capacity to segregate in a regular fashion.
3. Crosing-over in one arm of a metacentric chromosome does not affect the crossing over in the arm of the same chromosome.
Which of the statements given above are correct?
A. 1, 2 and 3
B. 1 and 2
C. 2 and 3
D. 1 and 3
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Inhibitors to cell membrane synthesis are
A. Polymixin
B. Gramicidin and Circulin
C. Tyrocidin
D. All of the above
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G. J. Mendel was born in the year and place
A. 1822, Holland
B. 1821, Germany
C. 1823, Brunn
D. 1822, Brunn
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In apomixis, the progeny closely resembles
A. Male parent
B. Female parent
C. Both A and B
D. None of these
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The chromosomal theory of Heridity explains
A. Genes are composed of chromosome
B. Chromosomes are composed of DNA & protein
C. Genes are located on chromosomes and transmitted to the next generation through them
D. All of the above
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The term cybrid refers to the
A. Somatic hybrids
B. Gametic hybrids
C. Both A and B
D. None of these
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Performance of a double cross hybrid can be predicted by taking the average performance of
A. The inbreds involved in marking the double cross
B. All the single crosses to be used in making the double cross
C. The four non-parental single crosses obtained from the four inbreds
D. All the single crosses produced from the four inbreds
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A polyploid having chromosome sets from different sources such as different species is known as
A. Autopolyploid
B. Aneuploid
C. Tetraploid
D. None of these
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