EVERYDAY SCIENCE

SCIENCE

BOTANY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the leaf structure that is a hydrophobic coating and reduces water loss via transpiration? It is also why water droplets “bead” on a leaf.
A
Stoma
B
Guard cells
C
Phloem
D
Waxy cuticle
E
Upper epidermis
Explanation: 

Detailed explanation-1: -The plant cuticle is an extracellular hydrophobic layer that covers the aerial epidermis of all land plants, providing protection against desiccation and external environmental stresses.

Detailed explanation-2: -A waxy layer known as the cuticle covers the leaves of all plant species. The cuticle reduces the rate of water loss from the leaf surface.

Detailed explanation-3: -Stomata, present in more number at the underside of a leaf, open and close to allow carbon dioxide inside the cells. When the stomata open, water is lost in the form of water vapours. this process is called as transpiration.

Detailed explanation-4: -The waxy covering on plant leaves, young stems, and fruit is called the “cuticle". It is composed of cutin, a wax-like material produced by the plant that is chemically a hydroxy fatty acid. The purpose of this covering is to help the plant retain water. In arid regions, that is very important.

Detailed explanation-5: -The loss of water through the cuticles present in the leaf is known as cuticular transpiration.

There is 1 question to complete.