Corals

Question 1

What is the phylum and class for corals

Answer 1

Cnidaria

Anthozoa

Question 2

What do they all have

Answer 2

Stunning cells called nematoblasts

Question 3

When did they evolve

Answer 3

Cambrian

Question 4

What is the soft body called

Answer 4

Polyp

Question 5

What is its skeleton made out of

Answer 5

Calcium carbonate

Question 6

What is the whole skeleton called

Answer 6

Corallum

Question 7

What are the types of corals

Answer 7

Solitary

Compound

Question 8

What is the Calice

Answer 8

Bowl shaped depression where the soft polyp sits

Question 9

What is the columella

Answer 9

Rod that supports the septa

Question 10

What is the epitheca

Answer 10

Outer most layer of the skeleton

Question 11

What is the tabula

Answer 11

Horizontal plates dividing the coralita skeleton

Question 12

What is the corallite

Answer 12

The skeleton produced by one coral polyp

Question 13

What are the growth lines

Answer 13

Wrinkles produced as the coral grows

Question 14

What are dissepiments

Answer 14

Curved plates connected to septa and tabulae

Question 15

What are the septa

Answer 15

Vertical plates dividing the corallite skeleton

Question 16

What are the tree main orders of corals

Answer 16

Rugose
Tabulate
Scleractinia

Question 17

Are rugose corals extinct and are they solitary or colonial

Answer 17

Yes

Both

Question 18

The epitheca is what (Rugose)

Answer 18

Wrinkled

Question 19

How big are the corallites and do they have mural pores (Rugose)

Answer 19

Large

No

Question 20

What kind of symmetry do they have (Rugose)

Answer 20

Bilateral

Question 21

Geological range (Rugose)

Answer 21

Ordovician to Permian

Question 22

Are tabulate corals extinct

Answer 22

Yes

Question 23

Solitary or colonial (Tabulate)

Answer 23

Always colonial

Question 24

How developed is their tabulae (Tabulate)

Answer 24

Well developed

Question 25

How big are the corallites and are mural pores present (Tabulate)

Answer 25

Small | Maybe present

Question 26

What kind of symmetry do they show (Tabulate)

Answer 26

Radial symmetry

Question 27

How well is the development the septa (Tabulate)

Answer 27

Poor or absent

Question 28

Are dissepiments present (Tabulate)

Answer 28

May have dissepiments

Question 29

Do they have a collumela (Tabulate)

Answer 29

No

Question 30

Geological range (Tabulate)

Answer 30

Cambrian to Permian

Question 31

Are Scleractinian Corals extinct

Answer 31

No

Question 32

Are the solitary or colonial (Scleractinian)

Answer 32

Both

Question 33

Do they have mural pores (Scleractinian)

Answer 33

No mural pores between the colonial forms

Question 34

What kind of symmetry do they have (Scleractinian)

Answer 34

Radial symmetry knows as hexagonal symmetry

Question 35

What do they always have (Scleractinian)

Answer 35

Tabulae

Question 36

What is evenly developed (Scleractinian)

Answer 36

Secondary septa

Question 37

Geological range (Scleractinian)

Answer 37

Triassic to Now

Question 38

What is the mode of life for corals

Answer 38

Sessile Symbiotic relationship between the algae (Zooxanthellae) in which the coral provides protection and the algae provides a food source

Question 39

What feature do the soft bodied polyps have

Answer 39

Tentacles

Question 40

What is the purpose of tentacles

Answer 40

To feed

Question 41

What are the ideal conditions for growth

Answer 41

``` At or just below sea level Clear waters High-energy levels Stable salinity Between 23 and 27degrees C ```

Question 42

Where are they found in the world

Answer 42

30 degrees north and south from the equator

Question 43

What are the types of reef

Answer 43

Fringing reefs Barrier reef Atolls