Question 1

Which of the following characteristics distinguishes fungi 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

It is called dimorphism, and it allows the fungus to adapt to different environments, including the human body.

Question 3

Which of the following best describes the role of mycorrhizae in plant-fungal symbiosis?

Accepted Answer

They help plants absorb minerals and water from the soil.

Question 4

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

Accepted Answer

Plasmogamy → Karyogamy → Meiosis

Question 5

A laboratory technician isolates a unicellular organism with a cell wall, which divides by budding and forms pseudohyphae. Which organism is most likely being observed?

Accepted Answer

Candida albicans

Question 6

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

Accepted Answer

Production of bread and wine by Saccharomyces cerevisiae

Question 7

Which type of fungal spore is produced by fragmentation of septate hyphae?

Accepted Answer

Arthroconidium

Question 8

A patient with a compromised immune system develops a systemic fungal infection. Which group of mycoses does this infection belong to?

Accepted Answer

Opportunistic mycoses

Question 9

Which of the following statements about lichens is TRUE?

Accepted Answer

The alga produces carbohydrates, and the fungus provides structure and protection.

Question 10

Which phylum of fungi is characterized by coenocytic hyphae and the production of zygospores during sexual reproduction?

Accepted Answer

Zygomycota

Question 11

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

Accepted Answer

Ability to metabolize complex carbohydrates and grow in low moisture

Question 12

Which of the following is a distinguishing feature of Basidiomycota?

Accepted Answer

Production of basidiospores on a pedestal-like structure

Question 13

Which of the following best describes the economic importance of algae?

Accepted Answer

They are the main producers of oxygen on Earth and are used as food additives.

Question 14

A scientist discovers a multicellular, filamentous organism with cellulose and alginic acid in its cell wall, living in a marine environment. To which group does this organism most likely belong?

Accepted Answer

Brown algae (Phaeophyta)

Question 15

Which of the following is a correct statement about the life cycle of a typical fungus?

Accepted Answer

Sexual spores are produced after plasmogamy, karyogamy, and meiosis.

Question 16

Which of the following is a defining characteristic of protozoa?

Accepted Answer

They are unicellular eukaryotes with animal-like nutrition.

Question 17

Which of the following is a correct pairing of a pathogenic protozoan and the disease it causes?

Accepted Answer

Plasmodium falciparum – Malaria

Question 18

Which of the following statements about helminths is TRUE?

Accepted Answer

They have complex reproductive systems and may lack digestive systems.

Question 19

Which of the following best describes the difference between mechanical and biological transmission by arthropod vectors?

Accepted Answer

Biological transmission involves the vector serving as a site for pathogen reproduction.

Question 20

A patient is diagnosed with a tapeworm infection. Which structure is responsible for attachment to the host’s intestinal wall?

Accepted Answer

Scolex

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

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