Question 1

Which of the following best defines a protist?

Accepted Answer

A eukaryotic organism that is not an animal, plant, or fungus.

Question 2

Which structure is commonly found in many protists and is responsible for movement?

Accepted Answer

Flagella

Question 3

Fungi are classified as heterotrophs because they:

Accepted Answer

Absorb nutrients from other organisms rather than producing their own food via photosynthesis.

Question 4

Which of the following is a major ecological role of fungi?

Accepted Answer

Decomposing organic matter and recycling nutrients.

Question 5

Protists can be found in a variety of habitats. Which of the following is NOT a typical habitat for protists?

Accepted Answer

Desert sand dunes

Question 6

Which of the following statements correctly compares the cell walls of fungi and protists?

Accepted Answer

Fungal cell walls contain chitin, while some protists/algae have cellulose-based cell walls.

Question 7

A scientist discovers a unicellular organism with a nucleus and cilia for movement. It cannot photosynthesize and absorbs nutrients from its environment. Which group does this organism most likely belong to?

Accepted Answer

Protists

Question 8

Which of the following is TRUE about yeast?

Accepted Answer

Yeast is a unicellular fungus.

Question 9

Which term describes an organism that obtains its energy by consuming other organisms?

Accepted Answer

Heterotroph

Question 10

Which of the following is a shared trait between protists and fungi?

Accepted Answer

Both are eukaryotic and have a nucleus.

Question 11

A protist living in a pond uses photosynthesis to produce its own food. What term best describes this organism?

Accepted Answer

Autotroph

Question 12

Which of the following is NOT a method of movement used by protists?

Accepted Answer

Hyphae

Question 13

Fungi form mutualistic relationships with plants, such as mycorrhizae. What is the main benefit for the plant in this relationship?

Accepted Answer

Enhanced nutrient and water uptake from soil.

Question 14

Which of the following best describes the nutritional strategy of most fungi?

Accepted Answer

Absorptive heterotrophy

Question 15

Protists exhibit a wide diversity in their cellular organization. Which statement is correct?

Accepted Answer

Protists can be unicellular, colonial, or multicellular.

Question 16

Which of the following is a real-world example of a protist acting as a parasite?

Accepted Answer

Plasmodium causing malaria in humans.

Question 17

Which formula represents the process of photosynthesis performed by autotrophic protists?

Accepted Answer

$$6CO_2 + 6H_2O \rightarrow C_6H_{12}O_6$ + 6O_2$$

Question 18

A fungus is observed breaking down dead leaves in a forest. Which ecological role is it performing?

Accepted Answer

Decomposer

Question 19

Which of the following is a difference in nutrition between protists and fungi?

Accepted Answer

Protists can be autotrophs or heterotrophs, while fungi are exclusively heterotrophs.

Question 20

Which of the following best describes the role of photosynthetic algae in aquatic ecosystems?

Accepted Answer

They serve as primary producers, supporting food webs.

Protists and Fungi: Diversity, Structure, and Ecological Roles

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