ELI5: Explain Like I'm 5

Plant cuticle

Imagine that plants have their own sunscreen and raincoat on their skin. This is called the plant cuticle. The cuticle is a very thin, but strong coating on the leaves, stems, and flowers of the plant. It's like a clear, plastic-like layer that helps the plant stay safe from the sun, wind, and rain.

The cuticle acts like sunscreen because it protects the plant from the sun's harmful rays. Have you ever gotten a sunburn? Well, the cuticle prevents the same thing from happening to plants. It also keeps the plant's moisture inside, much like how a raincoat keeps you dry in the rain.

The plant cuticle is made up of two layers: the waxy, waterproof cutin layer and the cellulosic layer. The cutin layer prevents water from escaping the plant and helps protect it from damage. This layer also helps prevent the plant from being attacked by harmful insects and diseases.

The cellulosic layer is underneath the cutin layer, and it's made up of tough, fibrous materials. This layer gives strength and support to the plant structure. The plant cuticle makes sure that the plant can withstand harsh weather and environmental conditions.

So, just like how you need sunscreen and rain gear to protect yourself from the elements, plants have their own version in the form of the plant cuticle.