26 Questions
Which factors can affect the distribution of seaweeds?
Sea surface temperature
What are the main pigment types found in seaweeds?
Phycoerythrin and phycocyanin
What is the function of floats in seaweeds?
To provide buoyancy
Which pigment is responsible for the olive-brown or greenish color of algae when wet?
Fucoxanthin
Which kingdom includes organisms that can manufacture their own food?
Plantae
What is the distinctive feature of the Anthophyta group?
Highly-specialized leaves
Which factor(s) may have an effect on which species become dominant in the distribution of seaweeds?
All of the above
What is the main body structure of a seaweed?
Fronds or blades
Which pigment is responsible for the red color of some seaweeds?
Phycoerythrin
Which pigment is responsible for the blue color of some seaweeds?
Phycocyanin
What is the function of air-filled bladders in seaweeds?
To provide buoyancy
Which phylum includes red-colored algae found at greater depths in rivers, seas, and oceans?
Rhodophyta
Which phylum includes the dominant seaweeds in the colder waters of the northern hemisphere?
Phaeophyta
Which of the following is NOT a type of pigment found in seaweeds?
Terpenoids
Which of the following is NOT a structural molecule found in seaweeds?
Tocopherol
Which type of algae has a complex cell structure and can be unicellular, colonial, or multicellular reticulum?
Rhodophyta
Which phylum comprises most of the green algae?
Phylum Chlorophyta
What is the pigment responsible for the greenish color of chlorophytes?
Chlorophyll
Which phylum includes flowering plants like seagrasses and mangroves?
Phylum Anthophyta
What is the distinctive feature of the Anthophyta group?
Flower
Which kingdom includes organisms that can manufacture their own food?
Kingdom Plantae
What is the pigment responsible for the olive-brown color of algae when wet?
Fucoxanthin
How many orders are there in the algae group?
At least 13
What is the function of chlorophyll pigments in algae?
Capture sunlight for photosynthesis
What is the main characteristic of autotrophs?
They can manufacture their own food
Which kingdom serves as a source of food for other organisms?
Kingdom Plantae
Test your knowledge on the general characteristics of seaweeds, including their distribution patterns and body structure. Explore the factors that control their distribution, the different pigment types they possess, and the importance of pigments and structural molecules like phycocolloids and algin.
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