Thallus

Okay kiddo, let's talk about thallus. A thallus is a fancy word that scientists use to describe the body of something that doesn't have leaves, stems, or roots like plants do.

For example, imagine you have a moss growing on a rock. The moss doesn't have any leaves, stems, or roots sticking out like a flower or tree would. Instead, it has a soft, cushion-like body that covers the rock. This soft, cushion-like body is called a thallus.

Thallus can also be found in other organisms such as algae and fungi. The thallus of algae is usually thin and flat and grows in water like a pond or ocean. Meanwhile, the thallus of fungi can be in different shapes and sizes depending on the type of fungus.

So, in short, a thallus is a body of something that doesn't have leaves, stems, or roots and can be found in organisms like moss, algae, and fungi.