Question 1

Which organism from the table would you classify as an animal based on its appearance, habitat, nutrient acquisition, and reproduction?

Accepted Answer

Organism C

Question 2

Approximately how many animal phyla are currently recognized by biologists?

Accepted Answer

30 to 35

Question 3

Which synapomorphy distinguishes animals as a monophyletic group, distinct from choanoflagellates?

Accepted Answer

No cell walls

Question 4

What was an early selective advantage of a coelom in animals?

Accepted Answer

Contributed to a hydrostatic skeleton, allowing a greater range of motion

Question 5

In examining an unknown animal species during its embryonic development, how can you be sure what you are looking at is a protostome and not a deuterostome?

Accepted Answer

You see a mouth, but not an anus.

Question 6

Which reproductive trait is most associated with terrestrial environments?

Accepted Answer

Internal fertilization

Question 7

The central nervous system is lacking in animals that have _____.

Accepted Answer

Radial symmetry

Question 8

Most cnidarians are known to produce toxins. What feature of this group most likely evolved simultaneously with the evolution of these toxins?

Accepted Answer

A slow-moving or sessile lifestyle

Question 9

Which of the following is unique to animals?

Accepted Answer

Nervous and muscular tissue

Question 10

Lemon Sharks give birth to live young within specific marine habitats called nurseries. This species can be referred to as a ________ species.

Accepted Answer

Viviparous

Question 11

Which difference distinguishes protostomes from deuterostomes?

Accepted Answer

Embryonic development

Question 12

Which of the following are thought to be most closely related to chordates?

Accepted Answer

Echinoderms

Question 13

In which biome would you most likely find plants that exhibit C4 or CAM photosynthesis?

Accepted Answer

Desert

Question 14

Cnidarians (Jellyfish and relatives) are characterized by a _________ grade of organization.

Accepted Answer

Cell-tissue

Question 15

Match the correct fungal phylum to the distinguishing feature of morphology of their life cycle: Chytridiomycota = ?, Zygomycota = ?, Ascomycota = ?, Basidiomycota = ?

Accepted Answer

Chytridiomycota = flagellate spores, Zygomycota = zygosporangium, Ascomycota = ascospores, Basidiomycota = basidia

Question 16

How are lichens and mycorrhizae similar?

Accepted Answer

Both form symbiotic relationships with plants that benefit the plants.

Question 17

Suppose you find a small dead White-throated Sparrow and conclude it is a granivore. What details would lead you to this conclusion?

Accepted Answer

Cracker-like bill and seed remains in digestive tract

Question 18

Which equation best describes the relationship between surface area and volume for a spherical animal, and why is this important for nutrient acquisition?

Accepted Answer

$$SA = 4 \pi r^2$

Question 19

Evaluate this claim: Ignoring the details of their specific anatomy, worms, humans, and most other triploblastic animals have a shape analogous to that of a doughnut. Which feature supports this analogy?

Accepted Answer

Presence of a complete gut with a mouth and anus

Question 20

What is the basal lineage of Mammalia according to the phylogenetic tree?

Accepted Answer

Monotermatic

Animal Diversity, Body Plans, and Evolutionary Innovations: Step-by-Step Study Guidance

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