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51.

A cybrid is hybrid carryingA. Genomes and Cytoplams fo two different plantsB. Cytoplasms of two different plantsC. Cytoplasma of two different plants but genome of one plantD. Cytoplasma of several plants but genomes of two plants.

Answer» Correct Answer - C
52.

Cross between tow species of the sme genus isA. Intraspecific hybridisationB. Intervaietal hybridisationC. Interspecific hybridisationD. Intergeneric hybridisation

Answer» Correct Answer - C
53.

Plant piece used in tissue culture is calledA. ExplantB. SomacloneC. InoculantD. Clone.

Answer» Correct Answer - A
54.

Who initiated collaboration with Norman Borlaugh which culminated in green revolution in IndiaA. Dr W. DudgeonB. DrPanchanan MaheshwariC. M.S SwawinathanD. Ram Deo Misra.

Answer» Correct Answer - C
55.

Meristem culture is practised in horticulture to getA. Somaclonal variationsB. Haploid plantsC. Virus free plantsD. Slow growing plants

Answer» Correct Answer - C
56.

Triticale has been developed through cross betweenA. Maize and RyeB. Maize and grassC. Rice and RyeD. Heterosis.

Answer» Correct Answer - D
57.

First man-made cereal Triticale isA. DiploidB. HexaploidC. OctaploidD. Both B and C.

Answer» Correct Answer - D
58.

Protoplast isolation was first carried out byA. MendelB. CockingC. BatesonD. Skoog

Answer» Correct Answer - B
59.

match the columns A. a -4, b-2,c-5,d-1B. a-4,b-5,c-2,d-1C. a-4,b-5,c-1,d-2D. a-5, b-4,c-1,d-2

Answer» Correct Answer - C
60.

Which one is correct matching ?A. Potato- Late blight - Fusarium udumB. Citrus - Canker - Pseudomonas rubrilineansC. Brinjal - Root Knot - Meloidogyne incognitaD. Pigeon pea- seed Gall- Phytophthara infestans.

Answer» Correct Answer - C
61.

Which is incorrectly matchedA. Explant - Excised plant part used for callus formationB. Cytokinins - Root initiation in callusC. Somatic embryos- Embryos produced by vegetative cellsD. Anther culture-Haploid plants

Answer» Correct Answer - B
62.

The Triticum aestivum wheat isA. HaploidB. DiploidC. TetraploidD. Hexaploid

Answer» Correct Answer - D
63.

Cellular totipotency was first demonstrated by:A. T. SchwannB. A.V LeeuwenhoekC. F.C stewardD. Robert Hooke.

Answer» Correct Answer - C
64.

Breeding for disease resistance requiresA. Disease testB. A good source of resistanceC. Planned hybridisationD. All the above.

Answer» Correct Answer - D
65.

Which of the following is a bacterial plant diseaseA. Tikka diseases of GroundnutB. Downy mildew of GrapesC. Ring rot of potatoD. Red rot of Sugarcane

Answer» Correct Answer - C
66.

Callus is not produced inA. WoundB. Tissue cultureC. Suspension cultureD. Sexual reproduction.

Answer» Correct Answer - D
67.

Maize hybrids have been developed for higher amount of.A. MethionineB. LysineC. LeucineD. Cysteine

Answer» Correct Answer - B
68.

Production of superior `F_(1)` hybrids is calledA. EmasculationB. DomesticationC. InbreedingD. Heterosis.

Answer» Correct Answer - D
69.

The technique of obtaining large number of plantets through tissue culture isA. MicropropagtionB. MacropropogationC. Organ cultureD. Plant culture.

Answer» Correct Answer - A
70.

The phenomenon where the offspring superior than either of the parents is:A. HeterosisB. InheritanceC. PenetranceD. Influence.

Answer» Correct Answer - A
71.

Norman Borlaug is associated withA. White revolutionB. Green revolutionC. Blue revolutionD. Yellow revolution

Answer» Correct Answer - B
72.

Pomato isA. Somatic hybridB. Natural haploidC. Sometic embryoidD. Somaclonal variant

Answer» Correct Answer - A
73.

International Rice Research Institute (IRRI) is located at :A. IndiaB. PhilippinesC. japanD. Mexico

Answer» Correct Answer - B
74.

In callus culture , root can be induced by supply ofA. EthyleneB. GibberellinC. CytokininD. Auxin.

Answer» Correct Answer - D
75.

which is not correctly matched ?A. Explant-Excised plant part used for callus formationB. Cytokinins - Root initiation in callusC. Somatic embryos- Embryos produced by vegetative cellsD. Anther culture-Haploid plants

Answer» Correct Answer - B
76.

Find the correct answer : Assertion a. Citrullus vulgaris is produced from a cross between 4n male and 2n female plants. Reason r. These triploid sterile plants do not bear seeds.A. A and r are true with r being correct explanation of a.B. Both a and r are true but r being correct explanation of a.C. a is true but r is false.D. a is false but r is true.

Answer» Correct Answer - D
77.

Which is wrongly matchedA. Root - Exarch protoxylemB. Cassia- Imbricate aestivationC. Root pressure- GuttationD. Puccinia- Smut.

Answer» Correct Answer - D
78.

Cross between unrelated group of organisms is calledA. HybridisationB. HeterosisC. test crossD. Back cross.

Answer» Correct Answer - C
79.

When two unrelated individuals or lines are crossed, the perfomance of `"F"_(1)` hybrid is often superior to both its parents. This phenomenon is called:A. MetamorphosisB. HeterosisC. SplicingD. Transformation

Answer» Correct Answer - B