Question 1

Which of the following statements best describes the classification of protists?

Accepted Answer

The term 'protists' does not refer to an actual monophyletic group, but it is used for convenience.

Question 2

Which of the following is a feature shared by all protists?

Accepted Answer

They have a membrane-bound nucleus.

Question 3

A unicellular mixotrophic protist loses its chloroplasts but is still able to survive. How is this possible?

Accepted Answer

It can engulf nutrients or other organisms via phagocytosis.

Question 4

Which of the following is a common feature of all protists?

Accepted Answer

Nucleus.

Question 5

Primary endosymbiosis is best described as:

Accepted Answer

A host cell engulfing a prokaryotic cell.

Question 6

Which of the following is a benefit that eukaryotes gained via endosymbiosis?

Accepted Answer

A chloroplast.

Question 7

Which of the following is a characteristic that you could look for to determine if a cell has undergone secondary endosymbiosis?

Accepted Answer

A photosynthetic organelle with 3 or more membranes.

Question 8

When an infected mosquito bites a human, it injects ___________ (the infective stage of plasmodium) into the blood. Once they have invaded liver cells they become ___________, which infect red blood cells.

Accepted Answer

Sporozoites; merozoites.

Question 9

In the alternation of generations life cycle of Laminaria, which of the following represents the correct sequence?

Accepted Answer

Sporophyte \u003e zoospore \u003e gametophyte \u003e gamete \u003e zygote \u003e sporophyte.

Question 10

Which of the following statements is true about conjugation in the Paramecium life cycle?

Accepted Answer

It results in genetic recombination only.

Question 11

Which protist life cycle has a distinct use of both mitosis and meiosis across haploid and diploid stages?

Accepted Answer

All of the above.

Question 12

Which of the following answer options lists the 4 supergroups of eukaryotes?

Accepted Answer

Excavata, SAR, Archaeplastida, Unikonta.

Question 13

Using the phylogenetic tree, which of the following groups is most closely related to animals?

Accepted Answer

Nucleariids.

Question 14

How does the eukaryotic supergroup classification system differ from the traditional taxonomic hierarchy (Domain, Kingdom, Phylum, etc.)?

Accepted Answer

All of the above.

Question 15

What is the biggest benefit to the eukaryotic supergroup framework?

Accepted Answer

It clearly reflects the genetic and evolutionary relationships between different protists.

Question 16

Which of these statements about the plasmodium, laminaria, and paramecium life cycles is correct?

Accepted Answer

Plasmodium requires 2 hosts, Laminaria may look different at different stages of its life cycle, Paramecium produces new cells during its asexual phase.

Protists: Diversity, Evolution, and Life Cycles

Study Guide - Practice Questions

Study Guide - Flashcards