Number of  Flower can be increased by application of :-DorminC2H4CKABA

The number of flowers can be increased by the application of C2H4, also known as Ethylene. Ethylene is a plant hormone that promotes the ripening of fruits and the blooming of flowers.

Here's a step-by-step explanation:

1. Ethylene (C2H4) is a gaseous plant hormone that plays a vital role in the growth and development of plants.

2. It is involved in many plant processes including the stimulation of flowering.

3. When applied to plants, ethylene can stimulate the plant to produce more flowers. This is because ethylene can stimulate the genes responsible for flower production.

4. However, it's important to note that the application of ethylene should be carefully managed. Too much ethylene can cause the plant to over-ripen and die, while too little may not have the desired effect.

5. Therefore, it's recommended to apply ethylene in a controlled environment and under the guidance of a professional.

On the other hand, Dormin (Abscisic Acid - ABA) and Cytokinin (CK) are also plant hormones but they are not typically associated with increasing the number of flowers. ABA is generally associated with inhibiting growth and promoting dormancy, while CK promotes cell division and growth.

So, in conclusion, out of Dormin, C2H4, CK, and ABA, C2H4 (Ethylene) is the most likely to increase the number of flowers when applied to a plant.