Hekistotherm plants are found in Cold Desert.

Explanation:

Hekistotherm plants are those plants that remain in the vegetative stage for a very long period, and their flowering is triggered by a particular environmental condition. These plants are generally found in cold deserts where the growing season is short, and the conditions are unfavorable for plant growth.

Cold deserts are characterized by their long, cold winters and short, cool summers. They are found in regions where the annual precipitation is low and the temperature can drop below freezing during the winter months. These conditions make it difficult for most plants to survive, but hekistotherm plants have adapted to these harsh conditions.

The following are the reasons why hekistotherm plants are found in the cold desert:

1. Adaptation to harsh conditions: Hekistotherm plants have adapted to the harsh conditions of the cold desert by remaining in the vegetative stage for a long time. This allows them to conserve energy and resources until the environmental conditions are favorable for flowering.

2. Short growing season: The growing season in the cold desert is short, and hekistotherm plants have adapted to this by delaying their flowering until the conditions are right.

3. Environmental triggers: Hekistotherm plants require specific environmental triggers to induce flowering, and these triggers are often only present for a short period in the cold desert.

In conclusion, hekistotherm plants are found in the cold desert because they have adapted to the harsh environmental conditions and require specific triggers to induce flowering. They remain in the vegetative stage for a long time, conserving energy and resources until the conditions are right for flowering.