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Protists and Protozoans Overview

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Questions and Answers

What defines protists as eukaryotic organisms?

Presence of a nucleus (correct)

Presence of a cell wall

Absence of a nucleus

Lack of membrane-bound organelles

Which of the following characteristics is true for protozoans?

They are multicellular

They are prokaryotic

They do not have a nucleus

They are heterotrophic (correct)

What method do sarcodinians use to move?

Spore formation

Cilia

Flagella

Pseudopodia (correct)

Which of the following is an example of a zooflagellate?

Trichmympha Signup and view all the answers

What distinguishes ciliates from other protozoans?

Their bodies are covered with cilia Signup and view all the answers

Sporozoans are characterized by which of the following traits?

Form spores and are parasitic Signup and view all the answers

Which of the following is a characteristic of all protists?

They are primarily unicellular Signup and view all the answers

Which group of protozoans is the largest?

Ciliates Signup and view all the answers

What distinguishes heterotrophic protists from autotrophic protists?

Heterotrophs feed on other organisms Signup and view all the answers

The organism Plasmodium is an example of which type of protozoan?

Sporozoan Signup and view all the answers

Study Notes

Protists

Protists are eukaryotic, meaning they have a nucleus
Protists are neither plants nor animals
They are unicellular organisms
They are categorized into four "Supergroups"
Protists can be heterotrophs, autotrophs, or decomposers

Protozoans (animal-like Protists)

Protozoans are unicellular and eukaryotic
Protozoans are heterotrophic
They are motile
Sarcodinians move using pseudopods, which are extensions of their cytoplasm. An example is amoeba
Zooflagellates propel themselves using flagella, which are whip-like structures. Trypanosoma, which causes African Sleeping Sickness, is a zooflagellate that lives in tsetse flies
Ciliates are the largest group of protozoans. They have hair-like cilia that cover their bodies. An example is Paramecium
Sporozoans are parasitic protozoans that do not move. They reproduce both sexually and asexually. An example is Plasmodium, which causes malaria

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Description

Explore the fascinating world of protists and protozoans in this quiz. Learn about their classification, characteristics, and types, including heterotrophs and autotrophs. Test your knowledge on the unique features of these eukaryotic unicellular organisms.