Question

hii guyz!!!!
short note on types of algae.​

Answer 1

Answer:

1)Golden-brown algae  and diatoms are the most abundant types of unicellular algae, accounting for around 100,000 different species. Both are found in fresh and salt water environments. Diatoms are much more common than golden-brown algae and consist of many types of plankton found in the ocean. Instead of a cell wall, diatoms are encased by a silica shell, known as a frustule, that varies in shape and structure depending on the species. Golden-brown algae, though fewer in number, rival the productivity of diatoms in the ocean. They are usually known as nanoplankton, with cells only 50 micrometers in diameter.

2)GREEN ALGAE mostly abide in freshwater environments, although a few species can be found in the ocean. Like fire algae, green algae also have cell walls made of cellulose, and some species have one or two flagella. Green algae contain chloroplasts and undergo photosynthesis. There are thousands of unicellular and multicellular species of these algae. Multicellular species usually group in colonies ranging in size from four cells to several thousand cells. For reproduction, some species produce non-motile aplanospores that rely on water currents for transport, while others produce zoospores with one flagellum for swimming to a more favorable environment. Types of green algae include sea lettuce, horsehair algae, and dead man's fingers.

3)RED ALGAE are commonly found in tropical marine locations. Unlike other algae, these eukaryotic cells lack flagella and centrioles. Red algae grow on solid surfaces including tropical reefs or attached to other algae. Their cell walls consist of cellulose and many different types of carbohydrates. These algae reproduce asexually by monospores (walled, spherical cells without flagella) that are carried by water currents until germination. Red algae also reproduce sexually and undergo alternation of generations. Red algae form a number of different seaweed types.

4)BROWN ALGAE are among the largest species of algae, consisting of varieties of seaweed and kelp found in marine environments. These species have differentiated tissues, including an anchoring organ, air pockets for buoyancy, a stalk, photosynthetic organs, and reproductive tissues that produce spores and gametes. The life cycle of these protists involves alternation of generations. Some examples of brown algae include sargassum weed, rockweed, and giant kelp, which can reach up to 100 meters in length.

5)YELLOW -GREEN ALGAE  ARE least prolific species of algae, with only 450 to 650 species. They are unicellular organisms with cell walls made of cellulose and silica, and they contain one or two flagella for motion. Their chloroplasts lacks a certain pigment, which causes them to appear lighter in color. They usually form in small colonies of only a few cells. Yellow-green algae typically live in freshwater, but can be found in salt water and wet soil environments.