Question

which cells serve water in succulent plants like euphorbia​

Answer 1

The plant or succulent have thick, fleshy tissues that can store the water in the leaves, stems etc.

Explanation:

Some succulents can store water in the stem as they do not have leaves but some store the water in the leaves. Some succulents are able to store the water in their roots as they have deep and broad root systems in their body. In this type of the plant the stomata works as a reverse manner so it opens at night and closed at the day time to reduce the water loss from the plant.