Question 1

Which of the following statements best describes the difference between homology and analogy in evolutionary biology?

Accepted Answer

Homology refers to similarities due to shared ancestry, while analogy refers to similarities due to convergent evolution.

Question 2

In the Linnaean system of classification, which of the following sequences correctly orders the taxonomic ranks from broadest to most specific?

Accepted Answer

Domain, kingdom, phylum, class, order, family, genus, species

Question 3

A phylogenetic tree is best described as:

Accepted Answer

A hypothesis about evolutionary relationships among species

Question 4

Which of the following is true regarding the binomial nomenclature system introduced by Linnaeus?

Accepted Answer

The genus name is capitalized, the specific epithet is lowercase, and both are italicized.

Question 5

Which of the following best explains why phylogenetic trees do not indicate when species evolved or how much change occurred in a lineage?

Accepted Answer

Phylogenetic trees only show patterns of descent, not the timing or amount of evolutionary change.

Question 6

Which of the following is a monophyletic group?

Accepted Answer

A group that includes an ancestral species and all its descendants

Question 7

A researcher is comparing DNA sequences between two species and finds that many portions of their nucleotide sequences are identical. What is the most likely explanation for this observation?

Accepted Answer

The species share homologous genes due to shared ancestry.

Question 8

Which principle is used to select the simplest phylogenetic tree that requires the fewest evolutionary events?

Accepted Answer

Maximum parsimony

Question 9

In a phylogenetic analysis, what is the role of an outgroup?

Accepted Answer

It is a species or group that has diverged before the ingroup and helps differentiate shared ancestral from shared derived characters.

Question 10

Which of the following statements about gene duplication and gene families is correct?

Accepted Answer

Paralogous genes result from gene duplication and can evolve new functions within a species.

Question 11

Which of the following is a shared derived character (synapomorphy) of land plants that is absent in charophytes?

Accepted Answer

Alternation of generations

Question 12

In the life cycle of mosses, which generation is dominant and longer-living?

Accepted Answer

Gametophyte

Question 13

Which adaptation allowed vascular plants to grow taller than bryophytes?

Accepted Answer

Presence of vascular tissues such as xylem and phloem

Question 14

Which of the following best describes the difference between microphylls and megaphylls in vascular plants?

Accepted Answer

Microphylls are small leaves with a single vein; megaphylls are larger leaves with a highly branched vascular system.

Question 15

Which of the following is true about seedless vascular plants?

Accepted Answer

They have life cycles dominated by sporophytes.

Question 16

Which of the following is a function of the plant cuticle?

Accepted Answer

Prevents water loss from the plant surface

Question 17

Which statement about the ecological importance of mosses is correct?

Accepted Answer

Mosses can colonize bare soil, help reduce nitrogen loss, and some harbor nitrogen-fixing cyanobacteria.

Question 18

Which of the following best describes the difference between homosporous and heterosporous plants?

Accepted Answer

Homosporous plants produce one type of spore that develops into a bisexual gametophyte; heterosporous plants produce megaspores and microspores.

Question 19

Which equation would you use to calculate the probability of a specific DNA sequence change over time, as used in the maximum likelihood approach to phylogenetic analysis?

Accepted Answer

$$L = \prod_{i=1}^{n} P_i$$

Phylogeny and the Tree of Life: Systematics, Classification, and Phylogenetic Trees

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