Question

Sunken stomata is the characteristic of:(a) halophytes(b) xerophytes(c) mesophytes(d) hydrophytes

Answer 1

Sunken stomata is a important feature amongst  many plants in deserts and other dry environments. These plants are referred to as xerophytes.

A xerophyte is a species of plant that thrive  in an environment with little  water, such as a desert or an ice- or snow-covered region in the Alps or the Arctic.

Examples of xerophytes are cacti, pineapple etc.