Explanation: • Halophytes are the plants which have capacity to survive in the highly salt affected soils. This ability against high salt is mainly because of two mechanisms– salt tolerance and salt avoidance. • A true epiphyte is defined as a plant that uses another plant for physical support during its whole life, but it removes no nutrients from the phloem of its “host.” • A xerophyte is a species of plant that has adaptations to survive in an environment with little liquid water. Examples of xerophytes are cacti, pineapple. • Hydrophytes are the plants which live completely or partially submerged in fresh water. They have developed mechanisms for the removal of extra water from their cells. Hydrophytes have broad leaves with a large number of stomata on their upper surfaces.