marine invetebrates

Question 1

what is the phylum that has
asymmetry, no segments, no tissue layer and give an example of an animal in this phylum.

Answer 1

Porifera. sea sponges

Question 2

What are some characteristics of a Sea Sponge?

Answer 2

They have no tissue layers, no segments and can be asymmetrical or radial in symmetry.

They have many internal cavities and are porous

Question 3

What are some characteristics of cnadiria

Answer 3

Cnadarias are diplobalstic, they are radial in symmetry and have no segments. An example would be a jelly fish.

Question 4

What is phyla is dorsal ventrally flattened, triploblastic and have bilateral symmetry ?

Answer 4

Platyhelminthes

Question 5

What are some characteristics of the Platyhelminthes Phyla ?

Answer 5

They are triploblastic, are bilaterally symmetrical, have no segments and are dorsally ventrally flattened.

Question 6

What phyla has triploblastic, bilateral symmetry, no segments and have features like a radula and a muscular foot?

Answer 6

Mollusca

Question 6

What are some characteristics of the Nemertea Phyla?

Answer 6

They are triploblastic, bilaterally symmetrical and have no segments

Question 7

What differences are there between bivalves and gastropods in the Mollusca phyla

Answer 7

bivalves contain 2 shells and are usually filter feeders. They are sessile and uses byssal threads to attach onto surfaces.

Gastropods usually have 1 shell and are active feeders and some are predatorial. They usually have a radula.

Question 8

What Characteristics does annelids have?

Answer 8

Annelids have bilateral symmetry, they have segments and are triploblastic. They can also become errantia or sedentaria depending on the environment.

Question 9

What phyla has bilateral symmetry, triploblastic, segemented and have sensory structures on head.

Answer 9

Annelida

Question 10

What is an example of an Annelid?

Answer 10

Bristle Worm

Question 11

What are the appendages called for annelids that errant swimmers in the polychaeta class?

Answer 11

These structures are known as parapodia, they aid in locomotion and can also help with gas exchange.

Question 12

What are some characteristics of Arthropods?

Answer 12

Arthropods are Triploblastic, they have bilateral symmetry, and are segmented.

Question 13

What are some features in Arthropods?

Answer 13

In the sub-phyla crustacea, they have chitinous exo-skeleton and jointed appendages

Question 14

What Phyla are segmented, are triploblastic and are bilaterally symmetrical.

Answer 14

Arthropoda

Question 15

What characteristics do Echinodermata’s have?

Answer 15

They are triploblastic, they are radially symmetrical (penta-radial as adults) and are not segmented.

Question 16

Give an example of a Echinoderm, and state some features that they may have.

Answer 16

Star fish, sea urchins, they have rough skin and tube feet.

Question 17

What are some Features of a Chordate?

Answer 17

Chordates are triploblastic, they are bilateral and have no segments. They also possess a notochord and a dorsal nerve chord.

Question 18

What phyla is triploblastic, have no segements and are bilateral and possess pharyngeal slits and notochords.

Answer 18

Chordata

Question 19

In the sub phyla, Urochordata, what are some features these animals possess?

Answer 19

they have thick acellular body coverings.

Question 20

What is the phyla of a creature that have rough skin, radial symmetry ?

Answer 20

Echinodermata

Question 21

What is the Phyla of a creature that has multiple holes and has radial symmetry ?

Answer 21

Porifera

Question 22

What is the Phyla of a creature that has a muscular foot, and 2 shells

Answer 22

Mollusca (bivalve)

Question 23

What is the phyla of a creature that is a elongated round worm ?

Answer 23

Nematoda

Question 24

What are some characteristics of a Bryozoa ?

Answer 24

Bryozoa’s are diploblastic, they have no segments and are bilateral. They are usually found in a colony of zooids and are suspension feeders

Question 25

What is the phylum of a bilateral, diploblastic creature with no segments. that filter feed and do NOT contain nematocysts?

Answer 25

Bryozoa