Multiple Choice Questions

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Assertion: Somatic hybridisation is a process where protoplasts of two desired plants can be fused to develop improved plants.

Reason: Cross breeding can also induce variability

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are true but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false.


B.

If both assertion and reason are true but reason is not the correct explanation of assertion.

Cross Breeding is the process of causing animals to mate with another species, or of causing plants to reproduce with another species.


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Match Column - I 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- (iii), B- (iv), C-(1), D- (ii)

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

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

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


Golden rice is a transgenic crop of the future with the following improved trait

  • high lysine (essential amino acid) content

  • insect resistance

  • high protein content

  • high vitamin A content


Which one is not produced by aquaculture?

  • oyster

  • silkworm

  • singhara

  • frog


Which is social foresting species

  • Leucaena leucocephala

  • Tectona grandis

  • Mangifera indica

  • Rosa indica


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Which one has the largest species variety in India

  • Wheat

  • Maize

  • Rice

  • Potato


Assertion: Neurospora is commonly called water mould.

Reason: It belongs to basidiomycetes fungi.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are true but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false.


Why is vivipary an undesirable character for annual crop plants ?

  • It reduces the vigour of plant

  • The seeds cannot be stored under normal conditions for the next season

  • The seeds exhibit long dormancy

  • It adversely affects the fertility of the plant


Match column I with column II and select the correct option from codes given below.

Column I Column II
Brassica Himgiri
Okra Pusa Komal
Wheat Pusa Gaurav
Cowpea Pusa Sawani

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

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

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

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


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Assertion: Inbreeding increases homozygosity, thus exposes harmful recessive genes, which are eliminated by selection.

Reason: Continued inbreeding reduces fertility and productivity.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are true but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false


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