Question

Parthenocarpic tomato fruits can be produced by

• A. Raising the plants from vernalized seeds
• B. Treating the plants with phenylmercuric acetate
• C. Removing androecium of flowers before pollen grains are released
• D. Treating the plants with low concentrations of gibberellic acid and auxins

Answer 1

Answer: (D)

Treating the plants with low concentrations of gibberellic acid and auxins

Plant hormones such as auxins and or gibberellins when sprayed on flowers help to stimulate parthenocarpy in fruits. Parthenocarpy makes the fruit seedless.

It halts the fertilisation process and also helps the ovaries to mature without fertilisation. The process is known as artificial parthenocarpy. So, the correct option is 'Treating the plants with low concentrations of gibberellic acid and auxins'.

Treating the plants with phenylmercuric acetate will result in anti-transpiration.

Vernalized seeds are the chilled seeds. Removing androecium of flowers before pollen grains are released will help in preventing unwanted pollution. Thus options A, B and C does not have any relation with parthenocarpy.