Lecture 4

Question 1

Darwin’s Theory of Reef Evolution: – > barrier > atoll

Answer 1

fringing reef

Question 2

sponges

Answer 2

porifera

Question 3

minerals of sponge spicules

Answer 3

calcite or opal or silica

Question 4

distant relatives of fossil and living sphinctozoan sponges

Answer 4

archaeocyath

Question 5

archaeocyath have 2 walls separated by –

Answer 5

radial septa

Question 6

archaeocyath have an – with large pore

Answer 6

inner cone

Question 7

archaeocyath have an – cone with small pores

Answer 7

outer

Question 8

walls of archaeocyath is made of

Answer 8

CaCO3

Question 9

archaeocyath and corals are studied in –

Answer 9

thin sections

Question 10

reproductive pathways in phylum cnidaria

Answer 10

medua, polyp, and larva

Question 11

Phylum Cnidaria has 3 classes

Answer 11

Hydrozoa, Schyphozoa, Anthozoa

Question 12

polyps and medusa

Answer 12

Hydrozoa

Question 13

medusa (jellyfish)

Answer 13

Scyphozoa

Question 14

anemones and corals

Answer 14

Anthozoa

Question 15

Paleozoic corals

Answer 15

tabulate and rugose

Question 16

modern corals

Answer 16

scleractinia

Question 17

scleractinia CACO3

Answer 17

aragonite

Question 18

T/F: scleractinian corals weren’t present in early Triassic

Answer 18

true

Question 19

corallite have – growth

Answer 19

intermittent (irregular intervals)

Question 20

reefs have great primary porosity and –

Answer 20

permeability

Question 21

most of the coral is – space

Answer 21

evacuated

Question 22

biomineralization then

Answer 22

permineralization

Question 23

tabulate corals are always

Answer 23

colonial

Question 24

tabulate corals have – corallites and no radial septa

Answer 24

narrow

Question 25

syringopora, favosites, heliolites, halysites

Answer 25

tabulate corals

Question 26

Halysites have chains of corallites and –, horizontal septa

Answer 26

spaces between them filled with sediment

Question 27

rugose corals may be –

Answer 27

solitary or colonial

Question 28

Amygdalophyllum

Answer 28

Carboniferous rugose coral

Question 29

– evolution in rugose corals

Answer 29

convergent

Question 30

phaceloid, ceroid, asteroid, thamnaseroid

Answer 30

rugose coral

Question 31

convergent evolution or – is rife within all coral groups

Answer 31

homoplasy

Question 32

need genomic info and – to understand relationships among Scleractinia

Answer 32

morphology