Dipoblastic and sponges

Question 1

What does porifera mean?

Answer 1

Pore bearer

Question 2

Sponge habitat?

Answer 2

50 in freshwater, others in marine

Question 3

What does sessile mean?

Answer 3

Attache to rocks

Question 4

How do sponges feed?

Answer 4

Filter feeders

Question 5

What do sponges lack?

Answer 5

Symmetry, muscles or nervous system

Question 6

Water current enters sponge via?

Answer 6

ostia

Question 7

Water current leaves the sponge?

Answer 7

Via osculum at top

Question 8

What is the name of the sponges funnel cell?

Answer 8

Choanocyte

Question 9

What beats water through sponge?

Answer 9

Flagella

Question 10

How do sponges reproduce?

Answer 10

Hemaphrodites - sperm sent out the osculum and larvae are free swimming

Question 11

Some sponge reproduce asexually via?

Answer 11

Budding

Question 12

Sponges synthesis chemicals such as

Answer 12

Oxylipins (protect against predators)

Question 13

Which class do most sponges belong to?

Answer 13

Demospongia

Question 14

What are the 3 classes of porifera?

Answer 14

Demospongia, hexactinella and calcarea

Question 15

What are ctenophore?

Answer 15

Comb carriers

Question 16

Habitat of ctenophore?

Answer 16

Open sea

Question 17

What separates the 2 cell layers of ctenophore?

Answer 17

Gelatinous layer (mesoglea)

Question 18

Do ctenophore have complete through gut?

Answer 18

Yes

Question 19

How do ctenophore move?

Answer 19

Cells with plates of cilia

Question 20

Ctenophores may be closely related to what?

Answer 20

The ancestor of all animals

Question 21

What are cnidaria?

Answer 21

Stinging cells

Question 22

Habitat of cnidaria?

Answer 22

all aquatic, almost all marine

Question 23

What separates the 2 layers of cnidaria?

Answer 23

Mesogloea, same as ctenophora

Question 24

What is the cnidarian mouth?

Answer 24

Blind gastrovascular cavity with 1 opening

Question 25

Cnidaria also known as

Answer 25

Coelenterates

Question 26

‘Nemato’?

Answer 26

thread

Question 27

Cnidaria life cycle?

Answer 27

Sessile polyp and Motile medusa

Question 28

Cnidarian polyp may bud to form

Answer 28

asexually produced colonies

Question 29

Cnidarian medusa shed what into the water?

Answer 29

Eggs and sperm

Question 30

What happens to cnidarian fertilised egg?

Answer 30

Free swimming, ciliated planula larva. Settles to bottom and transforms into polyp

Question 31

Essentially, what is a medusa?

Answer 31

An inverted polyp without a stalk

Question 32

What are the 4 classes of cnidaria?

Answer 32

Anthozoa, Cubozoa, Scyphozoa, hydrozoa

Question 33

(Cnidarian class) What are Anthozoa?

Answer 33

flower animals, sea anemones, hard and soft corals

Question 34

(Cnidarian class) Anthozoa lack medusa or polyp stage?

Answer 34

Lack medusa

Question 35

(Cnidarian class) Corals have what kind of relationship with particular algae?

Answer 35

Symbiotic - corals provide inorganic nutrients and algae provide sugars from photosynthesis

Question 36

(Cnidarian class) What are hydrozoa?

Answer 36

Water animals

Question 37

(Cnidarian class) What stage of life cycle dominates hydrozoa?

Answer 37

Polyp (while some species only have medusa stage)

Question 38

(Cnidarian class) What are scyphozoa?

Answer 38

Jelly fish (cup shaped animals)

Question 39

(Cnidarian class) Life cycle of scyphozoa?

Answer 39

Large medusa and small polyps

Question 40

(Cnidarian class) What are cubozoa?

Answer 40

Box jellyfish

Question 41

(Cnidarian class) What’s special about some box jellyfish?

Answer 41

Have eyes with a retina, lens and iris