Question 1

Which of the following characteristics is unique to animals within the Unikonta supergroup?

Accepted Answer

Multicellularity with ingestive heterotrophy

Question 2

A newly discovered organism is multicellular, eukaryotic, and heterotrophic, but it absorbs nutrients rather than ingesting them. To which kingdom does it most likely belong?

Accepted Answer

Fungi

Question 3

Which of the following is a derived trait that distinguishes triploblastic animals from diploblastic animals?

Accepted Answer

Presence of a mesoderm

Question 4

What is the evolutionary advantage of having a complete digestive system (alimentary canal) compared to an incomplete digestive system?

Accepted Answer

Allows for simultaneous ingestion and digestion of food

Question 5

Which of the following best describes the fate of the blastopore in deuterostome development?

Accepted Answer

It becomes the anus

Question 6

In the context of animal phylogeny, which group is considered the sister group to all other animals?

Accepted Answer

Poriferans (sponges)

Question 7

Which of the following statements about protostome development is correct?

Accepted Answer

The blastopore develops into the mouth

Question 8

A researcher finds an animal with bilateral symmetry, three tissue layers, a pseudocoelom, and a complete digestive tract. Which of the following best describes this animal?

Accepted Answer

Triploblastic pseudocoelomate

Question 9

Which of the following features is found in all chordates at some point during their development?

Accepted Answer

Notochord

Question 10

Which of the following is a correct pairing of animal group and unique feature?

Accepted Answer

Ecdysozoa – ecdysis (molting)

Question 11

Which of the following best explains why bilateral symmetry is associated with cephalization in animals?

Accepted Answer

Bilateral symmetry allows for the development of a head region where sensory organs and nervous tissue are concentrated.

Question 12

Which of the following is NOT a characteristic that unifies all animals?

Accepted Answer

Photosynthetic autotrophy

Question 13

Which of the following is a real-world example of a deuterostome animal?

Accepted Answer

Sea star

Question 14

Which of the following statements about animal phylogeny is correct?

Accepted Answer

All animals are more closely related to fungi than to plants.

Question 15

A scientist discovers a new animal with the following features: three tissue layers, bilateral symmetry, protostome development, a complete digestive system, and an exoskeleton. To which clade does this animal most likely belong?

Accepted Answer

Ecdysozoa

Question 16

Which of the following is a correct description of indeterminate cleavage?

Accepted Answer

Each cell produced during early cleavage retains the capacity to develop into a complete embryo.

Question 17

Which of the following is a defining characteristic of the phylum Chordata?

Accepted Answer

Presence of a notochord at some stage of development

Question 18

Which of the following evolutionary trends is observed in the animal kingdom?

Accepted Answer

Increase in tissue complexity and body symmetry

Question 19

Which of the following statements about coelom formation is correct?

Accepted Answer

Schizocoelous coelom formation is characteristic of protostomes.

Question 20

Which of the following is a real-world application of understanding animal phylogeny?

Accepted Answer

Tracing the evolutionary origins of human diseases

Overview of Animal Diversity and Evolutionary Trends (Ch. 32)

Guida di studio - Domande di pratica

Study guide - Flashcard