Somaclonal variation is seen in 

(1) tissue culture grown plants

(2) apomicts

(3) polyploids

(4) vegetatively propagated plants

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Which of the following species has the chromosome complement similar to that of Triticum aestivum ?

(a) Zea mays

(b) Secale cereal

(c) Gossypium

(d) Aegilops  

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Which of the following is a correct match between crop, variety and resistance to diseases ?

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Apiculture is associated with which of the following groups of plants ?

(a) Grapes, maize, potato

(b) Sugarcane, paddy, banana

(c) Guava, sunflower, strawberry

(d) Pineapple, sugarcane, strawberry

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Pebrine in silkworms is caused by:-
(a) Dugesia
(b) Monocystis
(c) Nosema
(d) Plasmodium

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Which of the following is not true for inbreeding?

(a) It causes inbreeding depression after a few generations.

(b) It always increases the productivity.

(c) It is used to produce a pure line.

(d) It leads to homozygosity.

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The phenomenon that operates in the formation of root or shoot in a callus culture is

(a) differentiation

(b) re-differentiation

(c) de-differentiation

(d) re-juvenation.

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Match Column - 1 with Column - II and select the correct option from given codes.
Column I                               Column - II
A. Brassica                           (i) Himgiri
B. Okra                                (ii) Pusa Komal
C. Wheat                              (iii) Pusa Gaurav
D. Cowpea                            (iv) Pusa Sawani

(a) A- (iii), B- (iV), C- (i), D- (ii)

(b) A- (i), B- (iii), C- (ii), D- (iv)

(c) A- (iv), B- (iii), C- (i), D- (ii)

(d) A- (ii), B- (iv), C- (i), D- (iii)

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The number of chromosomes present in the cells of the bread wheat, Triticum aestivum suggests that it is

(a) hexaploid

(b) diploid

(c) tetraploid

(d) pentaploid

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Which one of the following methods is commonly used to maintain the genetic traits of a given plant ?

(a) By propogating through seed germination

(b) By propogating through vegetative multiplication

(c) By generating hybrids through intergeneric pollination

(d) By treating the seeds with gamma radiations 

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