There Are More Species of ________ Than of Any Other

question 27

Multiple Choice

There are more species of ________ than of any other type of animal.

• A)nematodes
• B)molluscs
• C)arthropods
• D)chordates

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Definitions:

Polyphyletic

Describes a taxonomic group that does not share an immediate common ancestor and therefore does not form a clade.

Clade

A single “branch” in the tree of life; each clade represents an organism and all of its descendants.

Opposable Toes

A characteristic of some primates where the big toe can be moved around to touch the other toes, allowing for more precise manipulation of objects.

Forward-facing Eyes

A trait predominantly found in predators (such as humans), which allows for improved depth perception and binocular vision.