Question

Parthenocarpy is induced by
A. ABA
B. Auxins
C. Zeatins
D. Cytokinin

Answer 1

Hint: The process of fruit production without fertilization is known as parthenocarpy.
The resulting fruit is seedless but looks like a regular fruit. Parthenocarpy can be seen in a wide range of fruits, including pineapple, cucumber, banana, grapes, and oranges, among others.
In non-parthenocarpic variations and naturally parthenocarpic types, seedless parthenocarpic fruit can be created out of season by artificial pollination using dead or changed pollen or pollen from a different species of plant. Application of artificially generated chemicals in paste form, injection, or spraying can also cause parthenocarpic growth.

Complete answer:
Option A: PPCs are ABA signaling pathway regulators, and the differential expression of PPCs following CPPU treatment implies that CPPU activates the ABA pathway. As a result, ABA may not be involved in the CPPU-induced parthenocarpy process.
So option A is not correct.
Option B: The spontaneous or chemically induced generation of fruit without ovule fertilization is known as parthenocarpy. As a result, the fruit will be seedless. Unfertilized ovaries become fruit in the presence of auxins. Auxin is a protein that aids in cell division, expansion, and growth.
So option B is correct.
Option C: Parthenocarpy is the spontaneous or chemically induced production of fruit without ovule fertilization. As a result, the fruit won't have any seeds. In the presence of auxins, unfertilized ovaries become fruit. Auxin is a protein that promotes cell division, growth, and expansion.
So option C is not correct.
Option D: Cytokinins are plant hormones that are required for growth. They control shoot meristem size, leaf primordia number, and leaf and shoot growth by encouraging cell division. They have the ability to stimulate both axillary bud differentiation and outgrowth. Axillary bud escape from apical dominance can be mediated by cytokinins.
So option D is not correct.

So option B is the correct answer.

Note:
Parthenocarpy comes from the Greek words parthenos, which means virgin, and karpos, which means fruit. Some parthenocarpic cultivars have a long history. The parthenocarpic fig is the oldest known cultivated plant, dating back at least years. Parthenocarpy is a natural and artificial technique for making seedless fruit without ovule fertilization.