Future shoot hidden in a seed is called ________.

Plumule:

1. The young shoot of a plant embryo above the cotyledons, consisting of the epicotyl.
2. A seed contains an embryo that develops into a new plant. It consists of mainly three parts- the cotyledon (stores food), plumule (future shoot), and radicle (future root).
3. It is the part of a seed embryo that develops into the shoot, bearing the first true leaves of a plant.
4. It is a future shoot.
5. It grows into a shoot after the process of seed germination.

Final answer: Future shoot hidden in a seed is called plumule.