Module 3 Quiz 3

How do Macroalgae influence the environmental conditions for other organisms? There is more than one correct answer.

• They provide food.

• They provide protection

• They provide a place to attach

• They provide currents

Match the following

• gas bladders that help the algae float

• Thallus

• anchors the algae

• holdfast

• provide surface area for photosynthesis

• blades

• connects blades and pneumatocysts to the holdfast

• pneumatocysts

• the body of the multicellular algae

• stripe

Where does photosynthesis occur in algae?

• In the blades

• In the stripe

• In the gas sacs 😆

• In all parts of the algae

Select the answer that describes Green Algae.

• Member of phylum Chlorophyta. Chlorophyll is the primary photosynthetic element. Only 10% are marine but dense populations can be found in certain ocean environments.

• Member of phylum Phaeophyta. Chlorophyll is often masked by fucoxanthin. Most are marine and inhabit cold waters.

• Member of phylum Rhodophyta. Chlorophyll is often masked by phycobilins. More of these organisms than the other types of algae put together. Live in mostly warm water.

Select the answer that describes Red Algae.

• Member of phylum Chlorophyta. Chlorophyll is the primary photosynthetic element. Only 10% are marine but dense populations can be found in certain ocean environments.

• Member of phylum Phaeophyta. Chlorophyll is often masked by fucoxanthin. Most are marine and inhabit cold waters.

• Member of phylum Rhodophyta. Chlorophyll is often masked by phycobilins. More of these organisms than the other types of algae put together. Live in mostly warm water.

Select the answer that describes Brown Algae.

• Member of phylum Chlorophyta. Chlorophyll is the primary photosynthetic element. Only 10% are marine but dense populations can be found in certain ocean environments.

• Member of phylum Phaeophyta. Chlorophyll is often masked by fucoxanthin. Most are marine and inhabit cold waters.

• Member of phylum Rhodophyta. Chlorophyll is often masked by phycobilins. More of these organisms than the other types of algae put together. Live in mostly warm water.

Match the following

• giant kelp

• Fucus

• used to culture bacteria

• Agar

• an emulsifying agent

• Macrocysts

• found on rocky shores

• Sargassum

• most grow on rocks but two species float

• Carrageenan