Seaweed Vs Algae

Seaweed as the name implies are plants which grow in water catchment areas.  These plants are classified under Algae family category.  Seaweeds and Algae are aquatic ecosystem plants.  Seaweed fall under three types namely, red, brown and green.  Green has the highest number of Algae species with 10,000.  Red Algae lead with the highest diversity of 6,000 species.  Although Green has the highest species, it has the least diversity of 1,200 species.

  Seaweed Algae
Denote Multi-cellular Multi-cellular and unicellular
Habitat Inhabit only seawaters Marine waters and freshwater
Elaboration Species of seaweed are autotrophic Rely on other external food materials
Waters they prefer Inhabit shallow waters Deep and shallow waters

Seaweeds grow in sea water in ice cold, equatorial warm water provided the plants are exposed to enough sunlight for photosynthesis.

Seaweed is used by human beings in food, medicine, fertilizer and in industrial manufacture of products.

An alga is the largest collection of natural water plants responsible for fossil deposits dating back to 3 billion years according to scientific claim.  These plants produce the subsistence energy human beings need.  What is the difference?

  • Seaweed forms a portion of the large family Algae.
  • Algae have huge diversity in comparison to seaweeds.
  • All seaweeds rely on the sun for growth while Algae have alternative external food for growth.
  • Algae are found in fresh and marine water. Seaweed only grows in seawaters
  • Marine Algae can grow in shallow and deep waters while seaweed only grows in shallow waters.

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