If an animal has symmetry where one line divides it into halves that are mirror images, what is this called?
Bilateral Symmetry
100
Do all cnidarians have stinging cells?
YES!
100
What is ONE of the biggest reasons that sponges are not plants?
They take in food through their bodies and they need oxygen to live
100
What kind of symmetry do worms have?
bilateral symmetry
100
This type of worm fertilizes the soil with its droppings and also tunnels to loosen the soil, allowing air, water and plant roots to move through it. They are GREAT to have in your garden. What is the name for these worms?
Earthworms
200
An animal with this kind of symmetry has many lines of symmetry that go through a central point.
Radial Symmetry
200
A sea anemone has what type of cnidarian body plan?
a polyp
200
What does the phylum "porifera" mean?
having pores
200
Do worms have tissues and organs?
Yes!
200
Which of the three worm phyla has the largest population?
Roundworms ---are some of the most abundant animals on Earth!
300
Most sponges have which kind of symmetry?
No symmetry
300
Is a jellyfish a medusa or a polyp?
a medusa
300
Which part of the sponge distributes food to the body, removes wastes, and forms sperm or egg cells
Jelly-like cells
300
Some worms are free-living organisms. What is a free-living organism?
an organism that does not live in or on other organisms
300
Which phylum of worms that we studied does NOT have a one-way digestive system
flatworms ---specifically planarians
400
What kind of symmetry do cnidarians have?
radial symmetry
400
Besides defending themselves, how do stinging cells help cnidarians survive?
helps them obtain foood!
400
Which part of the sponge traps food and moves water through the sponge (hint: they have a whip-like structure)
collar cells
400
Planarians are scavengers. What is a scavenger?
organisms that feed on dead or decaying material
400
How many openings does a worm have if it has a one-way digestive system?
2!
500
Animals with this kind of symmetry have a definite front end with sense organs that picks up information about what is in front of them.
Animals with bilateral symmetry
500
What is the name for the relationship that sea anemones have with clownfish where they need each other to survive?
a symbiotic relationship
500
What helps a sponge keep a rigid frame and stand upright in the water?
Its spikes ---(these are also used for defense)
500
Which one of the three worm phyla has a closed circulatory system?