Protista Flashcards
(28 cards)
What is the phylum of red algae?
Phylum Rhodophyta
Red algae are the first multicellular organisms on Earth, existing between 1.5 to 1.2 billion years ago.
How many living species of red algae are there today?
About 6000 living species.
What pigment allows red algae to thrive at ocean depths?
Phycoerythrin.
What is the maximum depth red algae can thrive?
Up to 100 meters or more.
What is the economic importance of red algae?
Common as food and in the food processing industry.
What is the phylum of green algae?
Phylum Chlorophyta.
Where are most green algae found?
In fresh water, but some live in saltwater environments.
What do green algae and land plants have in common?
They have the same types of chlorophyll and the same color.
What do green algae store food reserves as?
In the form of starch.
What are euglenoids characterized by?
Having both plant-like and animal-like characteristics.
What structure do euglenoids use to detect light?
An eyespot.
What is the phylum of brown algae?
Phylum Phaeophyta.
What is a key feature of brown algae?
They can form underwater forests.
What structure anchors brown algae to rocks?
A holdfast.
What are cercozoans characterized by?
A cell membrane without a cell wall.
What extensions do cercozoans use for movement?
Pseudopodia.
What are ciliates characterized by?
Many short, hair-like projections called cilia.
What dual purpose do cilia serve?
Locomotion and sweeping food particles into the cell.
What is the phylum of flagellates?
Phylum Zoomastigina.
What do flagellates use for movement?
One or more flagella.
What is the phylum of sporozoans?
Phylum Sporozoa.
What do sporozoans primarily do?
They are parasites of animals.
What is the phylum of diatoms?
Phylum Chrysophyta.
What are diatoms a key source of?
Food for large marine organisms.
