Seedless fruits induced by

Options

A. ABA and IAA
B. ABA and Zeatin
C. IAA and `GA_3`
D. Ethylene and ABA

Answer

**Step-by-Step Solution:**

1. **Understanding Seedless Fruits**: Seedless fruits are those that develop without fertilization, meaning they do not contain seeds. This phenomenon is known as parthenocarpy.

2. **Definition of Parthenocarpy**: Parthenocarpy is the natural or artificially induced development of fruit without fertilization. The resulting fruits are called parthenocarpic fruits.

3. **Hormones Involved**: The main hormones responsible for inducing parthenocarpy are auxins and gibberellins. These hormones play a crucial role in the growth and development of plants.

4. **Role of Auxins**: Auxins are a class of plant hormones that regulate various aspects of growth, including cell elongation and the development of fruit. They are also involved in apical dominance, which is the phenomenon where the main central stem of the plant grows more strongly than the side stems.

5. **Role of Gibberellins**: Gibberellins, particularly gibberellic acid (GA3), are another group of plant hormones that promote growth and development. They are known to stimulate fruit development and can induce parthenocarpy in certain plants.

6. **Conclusion**: The induction of seedless fruits is primarily associated with the action of gibberellic acid (GA3). Therefore, seedless fruits can be induced by the application of GA3.

**Final Answer**: Seedless fruits are induced by gibberellic acid (GA3).

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