Parthenocarpic tomato fruits can be produced by from Biology Sexual Reproduction in flowering Plants Class 12 Nagaland Board
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Sexual Reproduction in flowering Plants

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Class 10 Class 12

Parthenocarpic tomato fruits can be produced by

  • Removing androecium of flowers before pollen grains are released

  • Treating the plants with low concentrations of gibberellic acid and auxins

  • Raising the plants from vernalized seeds

  • Treating the plants with phenylmercuric acetate


B.

Treating the plants with low concentrations of gibberellic acid and auxins

Parthenocarpy is the development of fruits without prior fertilization which results in the formation of seedless fruits. In some plant species, parthenocarpic (seedless) fruits may be produced naturally or they may be induced by treatment of the unpollinated flowers with auxin e.g. Parthenocarpic tomato fruits can be produced by treating the plants with low concentration of gibberellic acid (promotes fruit set) and auxin (completes the development process).
Removal of androecium, before pollen release, is called emasculation which is helpful in preventing unwanted poor pollination.
Vernalized seeds are the chill treated seeds for breaking dormancy.
Phenyl mercuric acetate is an antitranspirant.

Parthenocarpy is the development of fruits without prior fertilization which results in the formation of seedless fruits. In some plant species, parthenocarpic (seedless) fruits may be produced naturally or they may be induced by treatment of the unpollinated flowers with auxin e.g. Parthenocarpic tomato fruits can be produced by treating the plants with low concentration of gibberellic acid (promotes fruit set) and auxin (completes the development process).
Removal of androecium, before pollen release, is called emasculation which is helpful in preventing unwanted poor pollination.
Vernalized seeds are the chill treated seeds for breaking dormancy.
Phenyl mercuric acetate is an antitranspirant.

493 Views

Simultaneous meiotic division of microspore mother cells leads to :
  • tetrahedral tetrad
  • linear tetrad
  •  isobilateral
  • decussate tetrad.

A.

tetrahedral tetrad
1487 Views

In a bisexual flower when the gynaecium matures earlier than anther, it is called as :
  • protandry
  • protogyny
  • herkogyny
  • None of the above.

B.

protogyny
1265 Views

The innermost layer of anther is tapetum whose function is :
  • dehiscence
  • mechanical
  • nutrition
  •  protection.

C.

nutrition
1827 Views

The female gametophyte of a typical dicot at the time of fertilization is:
  •  8-celled
  • 7-celled
  • 6-celled
  • 4-celled

B.

7-celled
2359 Views

The fertilization occurs in the :
  • ovary
  • ovule
  • embryo sac
  • nucellus.

A.

ovary
1446 Views