Sunken stomata are found in

🔑 Key Points
Xerophytes are plants found in the desert area.
They require the least amount of water. In deserts, there is a scarcity of water, thus the plants have to take their water from the underground water level.
Their stomata are of sunken type (deep-seated) like cup-shaped depressions as it helps them to prevent the loss of water through transpiration.
Examples of xerophytes are Aloe vera, Pineapple, Cactus, etc.
The stomata are minute pores that occur in the epidermis of the plants.
Each stoma remains surrounded by two kidney- or bean-shaped epidermal cells, called the guard cells.
The stomata may occur on any part of a plant except the roots.
The epidermal cells bordering the guard cells are called accessory cells or subsidiary cells.
The number and types of stomata vary in different plant species based on their habitat.

📌 Important Points
→ Hydrophytes are plants that are either partially or fully submerged in water.
→ Partially submerged hydrophytes like Lilly have stomata present on their upper leaf surface (lower part is submerged in water).
→ Fully submerged hydrophytes like water ferns do not have stomata; instead of stomata, the plant's surface cells are capable of absorbing water, nutrients, and dissolved gases from the water.
→ Mesophytes generally have stomata present on the lower surface of the epidermis.
→ Examples are corn (maize), clover, cucurbit, etc.
→ Parasites are organisms that live on or inside other living organisms to derive their food. Example: Amarbel (Cuscuta) is a "parasite."