CA_Lesson_02_Protist_Diversity Flashcards
What is the composition of diatom cell walls?
Silica
Silica can accumulate on the ocean floor as sediment called diatomaceous earth, used as an abrasive and filtering agent.
Which pigment gives brown algae their color?
Fucoxanthin
What are the two groups slime molds are subdivided into?
- Acellular
- Cellular
What is the primary photosynthetic pigment found in green algae?
Chlorophyll
What type of reproduction do ciliates primarily use?
Binary fission
What is the term for the life cycle that alternates between spore-producing forms and gamete-producing forms?
Alternation of generations
What structure do paramecium use to maintain water homeostasis?
Contractile vacuoles
What is the main characteristic of Euglenoids?
They can photosynthesize and can also be heterotrophs.
Which group of protists are known for having two flagella?
Dinoflagellates
True or False: All sporozoans are parasitic.
True
Fill in the blank: Water molds differ from fungi in the composition of their cell walls, which are composed of _______.
Cellulose and cellulose-like compounds
What is the primary method of locomotion for protozoans in Phylum Sarcodina?
Pseudopods
What type of algae forms the base of many aquatic food webs?
Phytoplankton
Which group of algae is predominantly unicellular and can be bioluminescent?
Dinoflagellates
What is the main difference between algae and plants?
Algae do not have roots, leaves, or other plant structures.
Which structures are used by the organism shown for movement?
- Pseudopods
- Flagella
- Cilia
What are the two methods of nutrient absorption for water molds?
- From surrounding water or soil
- From other organisms
What are the three criteria used to classify algae?
- Pigment type
- Method of food storage
- Cell wall composition
What are the best-known examples of ciliates?
Paramecium
What is the function of a contractile vacuole in protozoans?
Collect excess water from the cytoplasm and expel it from the organism
Fill in the blank: Diatoms are photosynthetic autotrophs that use _______ and carotenoids as pigments.
Chlorophyll
What is a colony in the context of chrysophytes?
A group of cells that join together and form a close association.
What type of protists are known for using hair-like projections called cilia?
Ciliates
Which group of fungi-like protists absorb nutrients from decaying matter?
Slime molds
What is the main habitat for most dinoflagellates?
Salt water
What is the process by which two paramecia exchange genetic material?
Conjugation
