Dear student,
I will provide a simple definition of what is algae
Algae are organisms, or living things, that are found all over the world. Algae are very important because they make much of Earth’s oxygen, which humans and other animals need to breathe. Some algae, such as seaweed, look like plants. However, algae are actually neither plants nor animals. Instead they belong to a group of living things called protists.
There are about 27,000 different species, or types, of algae. They are most common in water, such as oceans, rivers, lakes, streams, ponds, and marshes. Some species live in soil or on leaves, wood, and stones. Algae even grow on animals such as turtles and polar bears.
Morphological means the structure of organisms and their structural features. In case of algae, the morphological features means their body shape, tissues , organs etc. Morphology means the study about them.