mairne test

what were sponges originally thought to be?

plants

are sponges multicellular or unicellular?

multicellular

are sponges eukaryotic or prokaryotic?

Eukaryotic (no cell walls)

how do we know sponges are animals?

reproduce, can actively move, not producers

name the ecological role of sponges..

they are filter feeders, provide habitats, recycle Ca

are sponges symmetrical or asymmetrical?

asymmetric

sponges compete with what other organism for living space?

coral

what type of movement do sponges display?

sessile movement (permanently attached to solid surf)

whats the scientific name for sponges?

phylum Porifera (bearer of holes)

Invertebrates vs. Vertebrates which has spinal cord?

invertebrates lack a backbone; vertebrates have a backbone

a sponge's structure: body (___________) is built around a system of ____________ ( sponges lack tissue )

thallus, canals

what is the main reason sponges don't have predators?

they don't have spicules

what is the name of the structure that facilitate sponges through the water flow?

collar cell

In sponges.. water flows through ____________ and out through the __________?

pores, osculum

In sponges.. what is the Ostia and its function?

tiny holes/ pores , carries wastes away ( large amount of water curuclates- nurtrients and O2)

In sponges.. whats the Spongocoel and its function?

spacious cavity mid sponge, water intake place

In sponges.. what's the Osculum and its function?

another large opening along periphery, water exit

What are Spicules?

Small structures within the sponge that give it support

what is the name of the structure that form the outer pinacoderm, playing a role in movement, they come in different sizes+forms?

pinacoytes

What are the three sponge types?

asconoid, syconoid, leuconoid

What kind of reproduction do sponges have?

Asexual and sexual

Reproduction is a sponge's __________________________________

ONLY WAY to disperse to new areas

How does sexual reproduction work in sponges?

lg numbers of sperm cells released in clouds, transported by currents, free swimming larva

How does asexual reproduction work in sponges? (not common)

budding- sprout a lil bud when cut off regenerate/repair itself

fragmentation- the buds breaking off grow into another

List some threats/predators to sponges...

sedimentation, parasites, pollution, reef destruction, fish, sea slugs humans, ect.

What symbiotic relationships could sponges have?

mostly bacteria

Who will hijackk a sponge?

crab

a fluke is a type of ...

flatworm

Are all worms hermaphreditic ?

Not all

Which worms are known as peanut worms?

spinunculids

What kind of symmetry do marine worms have?

bilateral symmetry

How do worms breathe and how many hearts do they have?

thru there skin, 5 hearts

Round worms, the most common on earth are also known as..

nematodes

what's the ecological role of worms?

nutrient cycling, not limited by resources, there also food for others

an anemone identifites as a ?

cnidarian

Which body types do jellyfish grow into?

polp, medusa

which jellys have bioluminescence

comb (no stinging cells either)

What is a gas filled sack on the Portuguese man of war called?

nemophore

Jellyfish are most symbiotic relationship with which other organisms?

algae

who eats jellyfish

seaturtles,

These are the stinging cells of the jellyfish?

amenocysts

what's the gelatinous material in a jellyfish?

mesoglea