$$\text{Hyphae} \xrightarrow{\text{Mitosis}} \text{Asexual Spores}$$

Question 1

Which of the following is a defining characteristic of fungi that distinguishes them from bacteria?

Accepted Answer

Fungi have cell walls containing chitin, glucans, and mannans.

Question 2

A fungus is observed to grow as a yeast at 37°C and as a mold at 25°C. What is the term for this property, and why is it clinically significant?

Accepted Answer

Dimorphism; it allows the fungus to evade the immune system by changing forms.

Question 3

Which of the following best describes the difference between septate and coenocytic hyphae?

Accepted Answer

Septate hyphae have cross-walls dividing the cells, while coenocytic hyphae lack septa and are multinucleate.

Question 4

Which equation correctly represents the process of asexual spore formation in fungi?

Accepted Answer

$$	ext{Hyphae} \xrightarrow{	ext{Mitosis}} 	ext{Asexual Spores}$$

Question 5

Which of the following is a beneficial effect of fungi in industry or medicine?

Accepted Answer

Production of cellulase by Trichoderma for fruit juice clarification.

Question 6

Which phase of sexual reproduction in fungi involves the fusion of two haploid nuclei to form a diploid zygote?

Accepted Answer

Karyogamy

Question 7

A patient presents with a chronic fungal infection affecting the hair, skin, and nails. Which type of mycosis is most likely involved?

Accepted Answer

Cutaneous mycosis

Question 8

Which of the following best describes the mutualistic relationship in lichens?

Accepted Answer

The alga provides carbohydrates via photosynthesis, and the fungus provides structure and protection.

Question 9

Which of the following is NOT a characteristic of algae?

Accepted Answer

They are always multicellular and terrestrial.

Question 10

Which of the following is a correct pairing of fungal phylum and its sexual spore type?

Accepted Answer

Zygomycota – Zygospore

Question 11

Which of the following best explains why treating fungal infections in humans is often difficult?

Accepted Answer

Fungi are eukaryotes and share many cellular features with humans.

Question 12

Which of the following is a correct description of the economic importance of fungi?

Accepted Answer

Saccharomyces cerevisiae is used in bread and wine production.

Question 13

Which of the following statements about yeast is TRUE?

Accepted Answer

Yeasts are unicellular fungi that reproduce by budding or fission.

Question 14

Which of the following is a correct sequence of events in the sexual life cycle of fungi?

Accepted Answer

$$	ext{Plasmogamy} ightarrow 	ext{Karyogamy} ightarrow 	ext{Meiosis}$$

Question 15

Which of the following adaptations allows fungi to grow on substrates such as bathroom walls and old newspapers?

Accepted Answer

Ability to grow in low moisture and metabolize complex carbohydrates.

Question 16

Which of the following is a correct statement about the role of fungi in mycorrhizal associations?

Accepted Answer

Fungi help plants absorb minerals and water from the soil.

Question 17

Which of the following is a correct description of a conidiospore?

Accepted Answer

An asexual spore not enclosed in a sac, produced by Ascomycota.

Question 18

Which of the following best describes the nutritional mode of fungi?

Accepted Answer

Chemoheterotrophic, obtaining nutrients by decomposing organic matter.

Question 19

Which of the following is a harmful effect of fungi?

Accepted Answer

Production of aflatoxins that contaminate food supplies.

12 The Eukaryotes: Fungi, Algae, Protozoa, and Helminths – Study Notes

Study Guide - Practice Questions