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Questions and Answers
What does the term 'Protista' mean in Greek?
What does the term 'Protista' mean in Greek?
- the mixture
- the unknown
- the very first (correct)
- the very last
Where do most Protista live?
Where do most Protista live?
- In extreme temperatures
- In dry terrestrial environments
- In water, damp terrestrial environments or as parasites (correct)
- In dark places
What is the primary feature of all Protista?
What is the primary feature of all Protista?
- They are heterotrophic organisms
- They are autotrophic organisms
- They are eukaryotic organisms (correct)
- They are multicellular organisms
What is the function of flagella or cilia in some Protista?
What is the function of flagella or cilia in some Protista?
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What do scientists speculate about Protista?
What do scientists speculate about Protista?
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What is true about the cells of Protista?
What is true about the cells of Protista?
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What is characteristic of Protista in terms of nutrition?
What is characteristic of Protista in terms of nutrition?
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What is observed in the members of this class?
What is observed in the members of this class?
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What is giant kelp?
What is giant kelp?
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What do scientists believe about the ancestral relationship between Protista and other kingdoms?
What do scientists believe about the ancestral relationship between Protista and other kingdoms?
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Study Notes
Protista
- Protista are simple eukaryotic organisms that are neither plants, animals, nor fungi.
- They are unicellular in nature but can also be found as a colony of cells.
- Most Protista live in water, damp terrestrial environments, or as parasites.
Characteristics of Kingdom Protista
- The primary feature of all Protista is that they are eukaryotic organisms, meaning they have a membrane-enclosed nucleus.
- They are usually aquatic, present in the soil, or in areas with moisture.
- Most Protista species are unicellular organisms, but there are a few multicellular Protista, such as kelp.
- The cells of these species have a nucleus and membrane-bound organelles.
- They can be autotrophic or heterotrophic in nature.
- Symbiosis is observed in the members of this class, such as the relationship between kelp and otters.
- Parasitism is also observed in Protista, such as the species Trypanosoma protozoa that can cause sleeping sickness in humans.
- Protista exhibit locomotion through cilia and flagella, and some have pseudopodia that help them to move.
- Protista reproduce by asexual means, and the sexual method of reproduction is extremely rare and occurs only during times of stress.
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