Protozoa Learning Center Quiz

2.

True or FalseFew protozoan species can reproduce sexually whereas most reproduce asexually

True
False

Correct Answer

A. True

Explanation

Protozoans reproduce sexually only when a unique protozoan dies out.

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3.

What are the four classes of Protozoans

Animalia, Plantae, Fungi, and Protista
Sarcodina, Ciliophora, Mastigophora, and Sporozoa.
Chordata, Arthropoda, Orthonectida, and Hemichordata.
None of the Above

Correct Answer

A. Sarcodina, Ciliophora, Mastigophora, and Sporozoa.

Explanation

The correct answer is Sarcodina, Ciliophora, Mastigophora, and Sporozoa. These are the four classes of Protozoans. Protozoans are single-celled organisms that belong to the kingdom Protista. Each of these classes has unique characteristics and features that distinguish them from one another. Sarcodina are characterized by their ability to move and capture food using pseudopodia. Ciliophora have hair-like structures called cilia that they use for locomotion and feeding. Mastigophora have whip-like structures called flagella that they use for movement. Sporozoa are parasitic protozoans that reproduce through spore formation.

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1

4.

This type of protozoan usually have complex life cycles that take place in a host.

Prokaryotic
Free-living
Parasitic
Eukaryotic

Correct Answer

A. Parasitic

Explanation

Parasitic protozoans typically have complex life cycles that involve multiple stages and occur within a host organism. Unlike free-living protozoans, which can survive and reproduce independently, parasitic protozoans rely on a host for their survival and reproduction. This dependence on a host allows them to exploit the resources and shelter provided by the host, enabling their complex life cycles to unfold. Eukaryotic protozoans, on the other hand, are characterized by having cells with a nucleus and other membrane-bound organelles, which is a general feature shared by both free-living and parasitic protozoans.

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1

5.

What factor differs the 4 classes of Protozoa?

How they reproduce
How they move
Some are prokaryotic and some are eukaryotic
Some are autotrophs and some are heterotrophs

Correct Answer

A. How they move

Explanation

The factor that differs the 4 classes of Protozoa is how they move. This means that each class of Protozoa has its own distinct method of locomotion.

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3

6.

Mark all that applyProtozoa are...

Eukaryotic
Prokaryotic
Unicellular
Multicellular
Heterotrophs
Autotrophs

Correct Answer(s)

A. Eukaryotic
A. Unicellular
A. Heterotrophs

Explanation

Protozoa are eukaryotic organisms, meaning they have a true nucleus and membrane-bound organelles. They are also unicellular, meaning they are composed of a single cell. Additionally, protozoa are heterotrophs, meaning they obtain their nutrients by consuming other organisms. Therefore, the correct answers are eukaryotic, unicellular, and heterotrophs.

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5

7.

Protozoa can be...

Plant-like only
Animal-like only
Both animal and plant-like
None of the above

Correct Answer

A. Animal-like only

Explanation

Protozoa are single-celled organisms that belong to the kingdom Protista. They are eukaryotic and primarily unicellular. Protozoa exhibit characteristics that are more similar to animals than plants. They are heterotrophic, meaning they obtain their energy by consuming other organisms. They also possess animal-like organelles such as cilia, flagella, and pseudopodia for locomotion. Additionally, protozoa can exhibit complex behaviors and have specialized structures for feeding and reproduction, further aligning them with animal characteristics. Therefore, the correct answer is "Animal-like only."

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2

8.

There are species of protozoa. Nearly half are already extinct.

Correct Answer
65,000
65000

Explanation
Protozoa are a diverse group of single-celled organisms that are classified under the kingdom Protista. There are estimated to be around 65,000 known species of protozoa. However, due to various factors such as habitat destruction, pollution, and climate change, nearly half of these species have become extinct. Therefore, the correct answer is 65,000,65000.

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1

9.

Membrane-bound chambers that contain digestive enzymes are called . All protozoans are heterotrophs so these chambers are what digest protozoan food.

Correct Answer
Food vacuoles
food vacuoles
Food Vacuoles

Explanation
Food vacuoles are membrane-bound chambers that contain digestive enzymes. All protozoans are heterotrophs, meaning they obtain their food by consuming other organisms. Therefore, these food vacuoles are responsible for digesting the food that protozoans consume.

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2

Protozoa Learning Center Quiz

What common disease is caused by the plasmodium parasitic protozoan?

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True or FalseFew protozoan species can reproduce sexually whereas most reproduce asexually

What are the four classes of Protozoans

This type of protozoan usually have complex life cycles that take place in a host.

What factor differs the 4 classes of Protozoa?

Mark all that applyProtozoa are...

Protozoa can be...

There are species of protozoa. Nearly half are already extinct.

Membrane-bound chambers that contain digestive enzymes are called . All protozoans are heterotrophs so these chambers are what digest protozoan food.