Kingdom Animalia Part 1

Question 1

What are the characteristics of animals?

Answer 1

Eukaryotic, heterotrophic, cells lack cell walls, multicellular.

Question 2

What are the 9 levels of biological classification?

Answer 2

Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species.

Question 3

What is Porifera?

Answer 3

Phylum that includes sponges, known as ‘pore bearing’.

Question 4

What is Cnidaria?

Answer 4

Phylum that includes jellyfish, hydra, and anemone, known as ‘sting bearer’.

Question 5

What is Platyhelminthes?

Answer 5

Phylum that includes flatworms.

Question 6

What is Nematoda?

Answer 6

Phylum that includes roundworms.

Question 7

What is Mollusca?

Answer 7

Phylum that includes bivalves, gastropods, and cephalopods.

Question 8

What is Annelida?

Answer 8

Phylum that includes segmented worms.

Question 9

What is Arthropoda?

Answer 9

Phylum that includes insects, arachnids, and crustaceans, known for ‘jointed legs’.

Question 10

What is Echinodermata?

Answer 10

Phylum that includes ‘spiny skinned’ invertebrates.

Question 11

What is Chordata?

Answer 11

Phylum that includes all vertebrates.

Question 12

What are the three types of animal symmetry?

Answer 12

Asymmetrical, radial, and bilateral.

Question 13

What does it mean for an organism to be bilaterally symmetrical?

Answer 13

It has a true ‘head’ and ‘tail’ region, with anterior, posterior, ventral, and dorsal body regions.

Question 14

What is cephalization?

Answer 14

The development of a more complex nervous system in the head region.

Question 15

What are the three embryological tissue layers?

Answer 15

Ectoderm, mesoderm, endoderm.

Question 16

What is an acoelomate?

Answer 16

An animal with ‘no body cavity’, e.g., Platyhelminthes.

Question 17

What is a pseudocoelomate?

Answer 17

An animal with a ‘false body cavity’, e.g., Nematoda.

Question 18

What is a coelomate?

Answer 18

An animal with a ‘true body cavity’, e.g., Annelida, Mollusca, Arthropoda, Echinodermata, Chordata.

Question 19

What are protostomes?

Answer 19

Animals where the blastopore develops into a mouth.

Question 20

What are deuterostomes?

Answer 20

Animals where the blastopore develops into an anus.

Question 21

What is the difference between protostomes and deuterostomes?

Answer 21

In protostomes, the mouth forms first; in deuterostomes, the mouth forms second.

Question 22

Which phyla are classified as protostomes?

Answer 22

Annelida, Mollusca, Arthropoda.

Question 23

Which phyla are classified as deuterostomes?

Answer 23

Echinodermata, Chordata.

Question 24

Are humans more closely related to insects or sea urchins?

Answer 24

Sea urchins.

Question 25

What does the ectoderm develop into?

Answer 25

The ectoderm develops into epidermal tissue and the nervous system

Question 26

What does the mesoderm develop into?

Answer 26

The mesoderm develops into the skeletal, muscular, excretory, circulatory and reproductive systems

Question 27

What does the endoderm develop into?

Answer 27

develops into the entire digestive tract (including liver and pancreas). and respiratory system

Question 28

Why are the Porifera and Cnidaria not in any of the coelomate sections?

Answer 28

porifera and cnidaria are not included here because poriferans do not contain any of the 3. embryological tissues, and cnidarians only contain endoderm and ectoderm, but no mesoderm

Question 29

What type of animals are able to classified as either protostome or deuterostome

Answer 29

The coelomates are able to be subdivided into protostomes and deuterostomes (annelida, mollusca, arthropoda, echinodermata, chordata)