What keeps a leaf from drYing?

Answer 1

Guard cell is an epidermal cell that is also a multisensor hydraulic valve. The guard cells surround the stomatal pore which controls the opening and closing of the stomatal. Due to tugor changes,the guard cells can be triggered by light, temperature, carbon dioxide concentration and hydration of the leaf.

Ex: The guard cells are triggered by a high temperature and closes the stomatal pore to conserve water.

Answer 2

in places with humidity, the wetness in the air keeps it wet. In dry places like deserts, there are underground water springs from the ocean. The plant's roots get its water from there and send it up to the leafs.

Answer 3

A waxy layer called the cuticle on the leaf surface helps to prevent water loss through evaporation. Stomata, small openings on the leaf surface, can also open and close to regulate transpiration and prevent excessive drying. Additionally, some plants have adaptations like succulence or reduced leaf surface area to minimize water loss.

Answer 4

A waxy layer called the cuticle on the top of the leaf holds in oxygen

Answer 5

A waxy layer called the cuticle prevents the flower from drying out.

Answer 6

The section of the leaf called the cuticle, its a waxy layer that prevents water from evaporating, and keeps the water in.