Multicellular protists

Question 1

Brown algae

Answer 1

• kelp, seaweed,
• exclusively marine
• placed in the same group that includes diatoms, dinoflagellates (not red and green algae)
• contain ALGIN which is used as thickening agent in foods
• alternation of generations
• kelp forests dominated by

Question 2

Red algae

Answer 2

• rhodophytes
• red color due to photosynthetic accessory pigment= phycoerythrin
• mostly marine
• can occur at depths where other algae cannot grow
• –they can do this because of the pigment
• alternation of generations
• many are fliamentous
• some are coralline (calcified)
• used in sushi

Question 3

Green algae

Answer 3

• alternation of generations
• chloroplasts similar to those found in land plants
• marine, freshwater, terrestrial
• 2 major groups:
• —chlorphytes
• —-charophytes= closest relative of land plants

Question 4

Slime molds

Answer 4

• type of unikot= diverse group of protists closely related to fungi and animals
• morphologically similar to fungi
• some are “Super Cells” = single cytoplasm that contains many nuclei
• mostly single celled
• others can form colonial structures when times are tough