Question 1

Animals with bilateral symmetry have ___________, which other animal do not:&#10;A)a head and anus&#10;B)a shell&#10;C)a right and left side

Accepted Answer

Animals with bilateral symmetry have a right and left side, which other animals do not.

Question 2

The most primitive vertebrates alive today are the ________ and __________.(Outcome #6b)&#10;A)sharks, rays&#10;B)hagfishes, lampreys&#10;C)tunicates, lancelets

Accepted Answer

Hagfishes and lampreys are the most primitive vertebrates alive today. They belong to a group called Agnatha, which means "without jaws". They lack many of the typical characteristics of modern vertebrates, such as bones and scales. Tunicates and lancelets are not considered vertebrates, but rather belong to a group called chordates.

Question 3

Which of the following animals does not have a chambered heart?&#10;A)sheep&#10;B)earthworm&#10;C)frog

Accepted Answer

Earthworms do not have a chambered heart. Instead, they have a closed circulatory system where the blood moves through vessels and capillaries. Sheep and frogs both have chambered hearts.

Question 4

The simplest animal phylum consists of which animals and is called what?&#10;A)anemones, Anthrozoa&#10;B)sponges, Anthozoa&#10;C)sponges, Porifera

Accepted Answer

The simplest animal phylum consists of sponges and it is called Porifera.

Question 5

Which of the following classes have the defining life cycle feature of a prominent medusa form and a brief, minor polyp form?&#10;A)Schyphozoa (jellies)&#10;B)Anthozoa (anemones)&#10;C)Platyhelminthes (flatworms)

Accepted Answer

The life cycle of Schyphozoa (jellies) includes a prominent medusa form and a brief, minor polyp form. Anemones (Anthozoa) only have a polyp form and do not have a medusa form. Flatworms (Platyhelminthes) do not have a medusa or polyp form in their life cycle.

Question 6

The vast majority of animal species alive today belong to which major group?&#10;A)vertebrata&#10;B)invertebrates&#10;C)chordata

Accepted Answer

Invertebrates make up approximately 97% of all animal species on Earth, while vertebrates (including chordates) make up only around 3%. Therefore, the best choice is B, invertebrates.

Question 7

The primary difference between amphibians and reptiles is what?&#10;A)Reptiles have teeth, whereas amphibians do not.&#10;B)Reptiles have an extra bone in the ear called the auricular operculum; amphibians do not.&#10;C)Amphibians have a moist, permeable skin, while reptiles have a dry, scaly skin.

Accepted Answer

The primary difference between amphibians and reptiles is that amphibians have a moist, permeable skin, while reptiles have a dry, scaly skin. Although some reptiles have teeth and an extra bone in the ear called the auricular operculum, these are not defining characteristics that distinguish them from amphibians.

Question 8

How could you determine if a newly discovered animal were a vertebrate or an invertebrate?&#10;A)test for the presence of a spinal column by dissection or x-ray&#10;B)test for the presence of DNA&#10;C)test for the ability of the organism to respond to stimuli with movement

Accepted Answer

Vertebrates have a spinal column, while invertebrates do not. Therefore, by testing for the presence of a spinal column through dissection or x-ray, we can determine if the newly discovered animal is a vertebrate or an invertebrate. Testing for DNA or the ability to respond to stimuli with movement could help in identifying the specific species, but not necessarily whether it is a vertebrate or an invertebrate.

Question 9

All vertebrates are classified into the phylum Chordata, but this phylum also contains two groups of invertebrates, the __________ and the ___________,&#10;A)Urochordata (tunicates), Cephalochordata (lancelets)&#10;B)Asteroidea (sea stars), Holothuroidea (sea slugs)&#10;C)Cephalopoda (octopi, squids, etc.), Scaphopoda (tusk and tooth shells)

Accepted Answer

The groups of invertebrates that belong to the phylum Chordata are the Urochordata (tunicates) and Cephalochordata (lancelets). Therefore, option A is the correct choice. Option B lists two groups of echinoderms and option C lists two groups of mollusks, neither of which are considered invertebrates within the phylum Chordata.

Question 10

Which of the following is not a member of the phylum Arthropoda?&#10;A)spiders&#10;B)sea urchins&#10;C)millipedes

Accepted Answer

The answer of Which of the following is not a...

Question 11

What is the major distinction scientists use to divide the animal kingdom?&#10;A)whether the animal has a vertebral column or not&#10;B)whether the animal has an endoskeleton or not&#10;C)whether the animal has an exoskeleton or not

Accepted Answer

The answer of What is the major distinction scientists use...

Deck 15: Diversity of Animals