Question

Parthenocarpic fruits are produced by

• A. Treating plants with phenyl mercuric acetate.
• B. Treating plants with low concentrations of gibberellic acid and auxin.
• C. Removing androecium of flowers before release of pollen grains.
• D. Raising plants from vernalised seeds.

Answer 1

The correct option is B Treating plants with low concentrations of gibberellic acid and auxin.

Parthenocarpic fruits are the fruits that develop from the unfertilized flower. This phenomenon of formation of fruit without fertilisation is called parthenocarpy

Some plant hormones can induce parthenocarpy such as Auxin and Gibberellic acid

Normally fruits will not develop without fertilisation but if sprayed with auxin, they will

Similarly, Gibberellic acid can also induce parthenocarpy where Auxin fails to do so

Hence, parthenocarpic fruits are produced by treating with low concentrations of Auxin and Gibberellic acid

So, the correct answer is 'Treating plants with low concentrations of gibberellic acid and auxin'