what is algae?

Answer 1

Algae (singular alga) encompass several groups of relatively simple living aquatic organisms that capture light energy through photosynthesis, using it to convert inorganic substances into organic matter.

Algae are photosynthetic organisms that occur in most habitats. Algae varies from small, single-celled species to complex multicellular species, such as the giant kelps that grow to 65 meters in length. [1]

Although algae have conventionally been regarded as simple plants, they actually span more than one domain, including both Eukaryota and Bacteria (see Blue-green algae), as well as more than one kingdom, including plants and protists, the latter being traditionally considered more animal-like (see Protozoa). Thus algae do not represent a single evolutionary direction or line but a level of organization that may have developed several times in the early history of life on Earth.

Answer 2

Algae are any of a class of single and multi celled photosynthetic water-dwelling plants. There is an entire science built around the study of algae called "Phycology."

Answer 3

Algae are water plants ranging in size from single celled plankton to giant kelp. There are many different forms of algae.

Answer 4

basically single celled plants that live in water and produce food by photosynthesis...