Sponges And Jelly Fish

Question 1

What is a porifera?

Answer 1

A sponge

Question 2

What classes are there for sponges?

Answer 2

Calcarea has carbonate spindles, Hexactinellida has silicon spicules, Demospongiae has protein spicules

Question 3

What is Cnidara?

Answer 3

Jellyfish

Question 4

What are the cell types for sponges?

Answer 4

Choancoytes they have flagella to move and use microvillis to capture food, amoebicytes can regenerate themselves, Pinacocytes flattened cells makes border around sponge, mesophyl are extra cellular secreted by amoebocytes.

Question 5

How does water enter the sponge?

Answer 5

Through incurrent canals, radial canals through porocytes

Question 6

What do Radial canals do?

Answer 6

They are lines with chanocytes that have flagellated cells that draw water that contains oxygen and cells into the canal

Question 7

How does water exist the sponge?

Answer 7

Through the oscucolum

Question 8

How to sponges consume particles?

Answer 8

Through food vacuoles in Ostia

Question 9

What happens if the food is too big?

Answer 9

They are digested in pinacocoytes

Question 10

What is phylum Cnidaria?

Answer 10

A jelly fish

Question 11

How do Cnidaria catch prey?

Answer 11

They use cindocytes which contain nematocysts and organelle coiled fiber that they use to stab prey with

Question 12

How do Cnidaria reproduce?

Answer 12

By budding

Question 13

How does obelia eat?

Answer 13

Through feeding polyps with stinging tentacles

Question 14

How do Obelia reproduce?

Answer 14

They do it through both a sexual and sexual reproduction by using reproductive polyp which is asexual and then Medusa which is sexual stage

Question 15

How many layers do Cnidaria have?

Answer 15

They have two layers

Question 16

What are the layers of Cnidaria?

Answer 16

Diploblasts with mesoglea in between them

Question 17

What are the two body types of Cnidaria?

Answer 17

Polyp which is an attached structure and Medusa free floating structure

Question 18

Which has a larger generation of Cnidaria?

Answer 18

Medusas have are larger generation animal polyps are the smaller stage

Question 19

What is aurelia body made out of?

Answer 19

Inner gastrodermis and outer layer epidermis mesoglea in between

Question 20

What are cindocytes?

Answer 20

They are in the tentacles stinging cells

Question 21

What is the sensory organ for Aurelia

Answer 21

Rhopoalium which contains ocelli for light detection

Question 22

What is the class Anthozoa Metridum?

Answer 22

Sea Anemones and corals

Question 23

What is the class Anthozoa Metridum?

Answer 23

Sea Anemones and corals

Question 24

How do females fertilize the eggs for sea anemones and corals?

Answer 24

They fertilize the eggs internally

Question 25

What is a coral polyp?

Answer 25

Genetically identical polyps that have an exoskeleton at their base and they produce a large structure

Question 26

What symbiotic relationship do coral have?

Answer 26

They have it with algae

Question 27

Do sponges have internal digestive cavity?

Answer 27

No they don’t

Question 28

What is dermal Ostia?

Answer 28

It is a bunch of holes in sponges which are connected to the inner canal

Question 29

Do sponges have choanocytes and if so what are the functions.?

Answer 29

They do and it is a lining of flagella’s

Question 30

How do sponges eat?

Answer 30

They are filter feeders

Question 31

What is the function of an osculum?

Answer 31

Push water out

Question 32

What is the spongocoel?

Answer 32

It is the central cavity

Question 33

Do sponges need other sponges to procreate?

Answer 33

No because they are hermotrophic which they produce both egg and sperm

Question 34

How is sexual reproduction accomplished in sponges?

Answer 34

Through amoebocytes

Question 35

What do choanocytes do?

Answer 35

Bring it water

Question 36

Where does water enter the sponge?

Answer 36

Through the dermal Ostia

Question 37

Where does the water go through first in sponges?

Answer 37

Through the intercurrent canal then they go through the excurrent canal which is connected which opens into the spongocoel

Question 38

What are porocytes?

Answer 38

They are tube like cells

Question 39

What are the layers of sponges

Answer 39

It’s start with the dermal epithelium then you have the gastrial epithelium which is lined on the inside of the dermal epithelium between these two layers there is mesophyl which there are the exoskeleton of amoebocytes which are spicules that make up the exoskeleton

Question 40

Are Cnidaria symmetrical organisms?

Answer 40

Yes they are radically symmetrical

Question 41

Do Cnidaria have gastrovascular cavities and what are their stinging cells called?

Answer 41

Yes they do and they have stinging cells that are called cindocytes

Question 42

What does dioplasitc mean for Cnidaria?

Answer 42

They have two layers ectoderm and endoderm

Question 43

How is Cnidaria body made?

Answer 43

For the outside they have the epidermis then for the middle is the mesoglea then for inside of the Cnidaria they have gastrodermis layer

Question 44

What are nematocysts?

Answer 44

They are threads that sting the prey when stimulated

Question 45

What class does Hydrozas do?

Answer 45

They are a polyp the produce medusas

Question 46

What does the class Scyphoza do?

Answer 46

They are large jellyfish

Question 47

What class does the Cubozoa do?

Answer 47

They are box jellyfish

Question 48

What is the Anthzoa class.?

Answer 48

Sea anemones and coral

Question 49

How do hydras reproduce?

Answer 49

Asexually by forming a bud

Question 50

What is the term used for both sex organs in an organism?

Answer 50

Hermaphordistism

Question 51

What are spermaries?

Answer 51

They are testies and ovaries

Question 52

Describe the layers of a hydra

Answer 52

You have the epidermis, the gastrodermis and a thin layer of mesoglea

Question 53

Where is the mouth located for Aurelia?

Answer 53

On the oral center of the concave surface

Question 54

Where is Aurelia’s tentacles?

Answer 54

They are fringed on their bodies

Question 55

Where are the Aurelia’s testes and ovaries?

Answer 55

The gonads

Question 56

What protective layer do corals have?

Answer 56

Limestone