- The definition of algae is a single or multi-cellular organism that has no roots, stems or leaves and is often found in water.
Facts About Algae
- Algae are photosynthetic organisms, meaning they use sunlight and chlorophyll to make food.
- At one time, algae were thought to be plants, but are not because they lack roots, stems and leaves.
- They live all over the world, from the oceans to the desert, and from hot springs to snow and ice.
- Many things eat algae, including: fish, sea urchins, worms, snails, sea turtles, seals, crustaceans, and even humans.
- Seaweed is highly nutritious, delicious, and can be cooked with pasta, put in salads, used in meat dishes, all because of its versatility.
- Examples of algae are seaweed, kelp, and red, brown and green algae.
- An example of algae in the Pacific Ocean are the giant kelps which growing over 65 yards in length, forming a marine forest.
- An example of algae is Alginate, made from brown algae, which is used as a thickener in many food products such as ice cream and salad dressings.
- An example of algae is agar, made from red algae, which is a thickener in food products and an ingredient in time-released drugs, laxatives, shampoos and fertilizers.
A closeup of algae covered rocks in a stream.Licensed from iStockPhoto
Origin: plural of Classical Latin alga, seaweed ; from Indo-European base an unverified form el-, an unverified form ol-, to be moldy, putrid from source Swedish ul, rancid, Dutch uilig, rotten
- algal adjective
Used by arrangement with John Wiley & Sons, Inc.
algae - Cultural Definition
Primitive organisms that contain chlorophyll but do not have structures, such as xylem and phloem, to transport fluids. Algae sometimes contain only a single cell, and nowadays they are not considered members of the plant kingdom.
- The most familiar algae are the greenish scum that collects in still water.
- Algae supply a considerable part of the world's oxygen.
algae - Medical Definition