The correct option is D No where on the plant
Some aquatic plants have stomata, and some do not. Hydrophytes (e.g. water ferns) are submerge aquatic plants that do not have stomata. Instead of stomata, the plants surface cells are capable of absorbing water, nutrients, and dissolved gases in the water. Submerged leaves of aquatic plants are astomatic. Stomata are either absent or vestigial.