Question 1

Which of the following is NOT a defining characteristic of fungi?

Accepted Answer

They possess chlorophyll for photosynthesis.

Question 2

A fungal species reproduces by producing spores that are genetically identical to the parent. Which type of reproduction is this, and what is a key feature of this process?

Accepted Answer

Asexual reproduction; produces offspring genetically identical to the parent.

Question 3

Which of the following correctly matches a fungal phylum with a defining characteristic?

Accepted Answer

Zygomycota: form zygospores during sexual reproduction.

Question 4

Which of the following is a beneficial effect of fungi?

Accepted Answer

Producing antibiotics such as penicillin.

Question 5

Lichens are best described as:

Accepted Answer

A symbiotic relationship between a fungus and a photosynthetic partner (alga or cyanobacterium).

Question 6

In a lichen, what is the primary role of the alga?

Accepted Answer

To perform photosynthesis and supply organic nutrients.

Question 7

Which of the following is a distinguishing characteristic of algae?

Accepted Answer

They can be unicellular, colonial, or multicellular and perform photosynthesis.

Question 8

Which phylum of algae is characterized by the presence of silica in their cell walls?

Accepted Answer

Bacillariophyta

Question 9

Which of the following is a harmful effect of algae?

Accepted Answer

Causing red tides that produce toxins harmful to humans and marine life.

Question 10

Which of the following is NOT a defining characteristic of protozoa?

Accepted Answer

They are always photosynthetic.

Question 11

A patient is diagnosed with malaria. Which protozoan phylum does the causative agent belong to, and what is a key feature of this group?

Accepted Answer

Apicomplexa; possess an apical complex for penetrating host cells.

Question 12

Which of the following best differentiates an intermediate host from a definitive host in a parasitic life cycle?

Accepted Answer

The intermediate host harbors the larval or asexual stage; the definitive host harbors the adult or sexual stage.

Question 13

Which of the following statements correctly compares cellular slime molds and plasmodial slime molds?

Accepted Answer

Plasmodial slime molds form a large multinucleate plasmodium, while cellular slime molds aggregate as individual cells.

Question 14

Which of the following is a distinguishing characteristic of parasitic helminths?

Accepted Answer

They often have reduced digestive and nervous systems compared to free-living worms.

Question 15

Why do parasitic worms often have elaborate life cycles involving multiple hosts?

Accepted Answer

To maximize transmission and survival by exploiting different environments and hosts.

Question 16

Which of the following pairs correctly matches a class of parasitic platyhelminths with an example?

Accepted Answer

Trematodes: Schistosoma mansoni

Question 17

A human becomes infected with Echinococcus granulosus by ingesting eggs from contaminated food. In this infection, what role does the human play?

Accepted Answer

Intermediate host

Question 18

Which of the following is a characteristic of parasitic nematodes with infective larvae?

Accepted Answer

They can infect hosts by direct skin penetration as larvae.

Question 19

Which of the following best distinguishes platyhelminths from nematodes?

Accepted Answer

Platyhelminths are dorsoventrally flattened, nematodes are cylindrical and unsegmented.

Question 20

Which of the following best defines an arthropod vector?

Accepted Answer

An arthropod that transmits pathogens from one host to another.

Question 21

Which of the following correctly differentiates a tick from a mosquito and names a disease transmitted by each?

Accepted Answer

Ticks are arachnids and transmit Lyme disease; mosquitoes are insects and transmit malaria.

Eukaryotic Microorganisms: Fungi, Algae, Protozoa, Helminths, and Arthropods

Study Guide - Practice Questions

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