Question 1

Which of the following best explains why fungal infections are often difficult to treat in humans, even with antifungal medications?

Accepted Answer

Fungi and humans are both eukaryotes and share similar cellular machinery, so drugs that target fungi can also harm human cells.

Question 2

A fungus is observed to have hyphae with cross-walls that contain pores, allowing cytoplasm and organelles to move between cells. What is the term for these cross-walls?

Accepted Answer

Perforated septa

Question 3

Which of the following is a key reason why fungi are more closely related to animals than to plants?

Accepted Answer

Fungi store energy as glycogen and have chitin in their cell walls, similar to some animal structures.

Question 4

A plant species exhibits a life cycle in which both the multicellular haploid and multicellular diploid stages are prominent. What is this type of life cycle called?

Accepted Answer

Haplodiplontic

Question 5

Which of the following best describes the function of sporopollenin in land plants?

Accepted Answer

It forms a tough outer layer that protects spores and pollen from desiccation.

Question 6

A botanist discovers a plant with microphylls, strobili, and true roots. To which phylum does this plant most likely belong?

Accepted Answer

Phylum Lycophyta

Question 7

Which of the following is a derived trait that distinguishes land plants from their closest algal relatives, the charophytes?

Accepted Answer

Alternation of generations with multicellular, dependent embryos

Question 8

Which of the following best describes the ecological importance of Sphagnum mosses in peat bogs?

Accepted Answer

They act as a major carbon sink, slowing decomposition and storing large amounts of carbon.

Question 9

Which of the following statements about mycorrhizal relationships is correct?

Accepted Answer

Endomycorrhizae penetrate root cell walls and form arbuscules, increasing nutrient exchange.

Question 10

A farmer is considering using Beauveria bassiana as a biopesticide. Which of the following is a potential disadvantage of using this fungus?

Accepted Answer

It can persist in the environment and may affect non-target beneficial insects.

Question 11

Which of the following best describes the process of double fertilization in angiosperms?

Accepted Answer

One sperm fertilizes the egg, and another sperm fuses with two polar nuclei to form the endosperm.

Question 12

Which of the following is a major evolutionary advantage of seeds over spores?

Accepted Answer

Seeds contain a protective coat, stored food, and an embryo, allowing for greater survival in harsh conditions.

Question 13

During the Permian period, which environmental change most benefited the rise of seed plants?

Accepted Answer

Drier climates that favored plants with seeds and pollen over those requiring water for fertilization

Question 14

Which of the following best explains why deuteromycetes are no longer considered a separate fungal phylum?

Accepted Answer

They are now classified based on their sexual reproductive structures, which were previously unknown.

Question 15

A plant is observed to have a single cotyledon, parallel leaf venation, and scattered vascular bundles. To which group does it most likely belong?

Accepted Answer

Monocots

Question 16

Which of the following best describes the function of ergosterol in fungal cells?

Accepted Answer

It is a sterol component of fungal cell membranes, similar to cholesterol in animal cells.

Question 17

Which of the following is a correct statement about the alternation of generations in land plants?

Accepted Answer

The sporophyte is diploid and produces spores by meiosis.

Question 18

Which of the following best describes the role of exoenzymes in fungal nutrition?

Accepted Answer

They are secreted to break down complex organic matter outside the fungal body, allowing absorption of nutrients.

Question 19

A patient is diagnosed with a systemic mycosis caused by Coccidioides spp. Which of the following best describes this type of infection?

Accepted Answer

A fungal infection that spreads throughout the body, often affecting internal organs

Question 20

Which of the following best explains why fungi produce large quantities of spores?

Accepted Answer

Producing many spores increases the likelihood of successful colonization in variable and sometimes harsh environments.

Fungi and Plant Diversity: Study Guide for Exam 3 (Kingdom Mycota & Plantae)

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