Question 1

Which of the following best explains why fungi are more closely related to animals than to plants?

Accepted Answer

Fungi absorb carbon as a food source and store carbohydrates as glycogen, similar to animals.

Question 2

What is the primary structural component of fungal cell walls?

Accepted Answer

Chitin and glucans

Question 3

Which statement about fungal nutrition is correct?

Accepted Answer

Fungi secrete enzymes to break down food before ingesting it.

Question 4

A fungus growing in a nitrogen-poor soil is observed to trap small insects. What is the most likely reason for this behavior?

Accepted Answer

To supplement its nitrogen intake.

Question 5

Which of the following is TRUE regarding the oxygen requirements of fungi?

Accepted Answer

Fungi can be obligate aerobes, obligate anaerobes, or facultative anaerobes.

Question 6

Which process describes asexual reproduction in yeast?

Accepted Answer

Budding, where a bulge forms and the nucleus divides via mitosis

Question 7

What is the role of fungal hyphae in mutualistic relationships with plant roots?

Accepted Answer

They channel water and dissolved minerals to the plant roots.

Question 8

Which of the following best describes the function of mycelium in fungi?

Accepted Answer

It is a network of hyphae that absorbs nutrients from the environment.

Question 9

A lichen is an example of which type of relationship?

Accepted Answer

Mutualism between fungus and photosynthetic algae

Question 10

Which of the following equations correctly represents the formation of a diploid zygote during fungal sexual reproduction?

Accepted Answer

$n + n \rightarrow 2n$

Question 11

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

Accepted Answer

Decomposing organic matter and recycling nutrients

Question 12

A fungal pathogen infects the skin of frogs, causing lesions and death by asphyxiation. Which disease does this describe?

Accepted Answer

Chytridiomycosis

Question 13

Which of the following statements about fungal cell structure is correct?

Accepted Answer

Fungal cells have cell walls made of chitin, a polysaccharide.

Question 14

Which type of fungal hyphae is characterized by the absence of septa, resulting in a continuous cytoplasmic mass with many nuclei?

Accepted Answer

Coenocytic hyphae

Question 15

Which of the following best describes the role of fungi in the cycling of nitrogen and phosphorus in ecosystems?

Accepted Answer

Fungi release nitrogen and phosphorus from decaying organic matter, making them available to plants.

Question 16

Which of the following is a correct description of facultative anaerobic fungi?

Accepted Answer

They grow best in the presence of oxygen but can survive in anaerobic conditions.

Question 17

Which of the following is a real-world example of mutualism involving fungi and animals?

Accepted Answer

Leaf-cutter ants cultivating fungus gardens for food.

Question 18

Which of the following is NOT a method of asexual reproduction in fungi?

Accepted Answer

Fusion of haploid hyphae to form a diploid zygote

Question 19

Which of the following best explains why fungi are important for ecosystem health?

Accepted Answer

They recycle nutrients by decomposing organic matter.

Question 20

Which of the following is a plausible consequence of fungal pathogens infecting crops?

Accepted Answer

Food spoilage and production of toxic compounds harmful to humans and animals.

Study Notes: Microbial Life – Fungi (General Chemistry Context)

Study Guide - Practice Questions