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Sexual Reproduction in Flowering Plants question

2006 · Q23
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Sexual Reproduction in Flowering Plants question

2006 · Q23

NEETBiologySexual Reproduction in Flowering PlantsMCQ+4 / −1
Parthenocarpic tomato fruits can be produced by
  1. A
    treating the plants with phenylmercuric acetate
  2. B
    removing androcium of flowers before pollen grains are released
  3. C
    treating the plants with low concentrations of gibberellic acid and auxins
  4. D
    raising the plants from vernalized seeds.
View written solutionFree

Correct answer: C

Parthenocarpy is the development of fruits without prior fertilization which results in the formation of seedless fruits. In some plant species, parthenocarpic fruits are produced naturally or they may be induced by treatment of the unpollinated flowers with auxin.

Removal of androecium before pollen release is called emasculation which is helpful in preventing unwanted pollination. Vernalized seeds are treated at ion temperature for breaking dormancy. Phenyl Mercuric Acetate is an antitranspirant.

Gibberellins and Auxins are known to induce parthenocarpy in plants. If a tomato plant is treated with a low concentration of auxin and gibberellic acid it’ll produce fruits without fertilization i.e. parthenocarpic fruits.

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