Which of the following is not related to a corm?

Tendrils are found in the following plants. Identify whether they are stem tendrils or leaf tendrils: $(a)$ Cucumber,$(b)$ Peas,$(c)$ Pumpkins,$(d)$ Grapevine,$(e)$ Watermelon.

$Cuscuta$ is:

The sensitive thread-like structures found in climbers which can coil around a support are:

The ginger plant has an underground stem which is known as:

Vegetative propagation in mint occurs through . . . . . . .