In orchids, Velamen tissues is found in

The correct option/answer is Root.

Velamen is a specialized, multi-layered epidermis that consists of dead cells with thickened walls. This spongy tissue is primarily found in the aerial roots of epiphytic plants, such as orchids.

The primary functions of velamen tissue include:
1. Moisture Absorption: It acts like a sponge, rapidly absorbing moisture, rain, and dew from the surrounding atmosphere.
2. Prevention of Water Loss: It helps in reducing transpiration and prevents the underlying tissues from drying out.
3. Mechanical Protection: It provides structural support and protection to the delicate vascular cylinder of the aerial root.

Therefore, in orchids, velamen tissue is specifically found in the Root (specifically the aerial roots).