Animal Basics
Sponges
Cnidarians
Worms
Potential Essay Questions
100
This is a characteristic that helps an animal survive in its environment or reproduce
AN ADAPTATION
100
Sponges belong to which phylum?
PORIFERA
100
All cnidarians have these two things
STINGING CELLS AND A HOLLOW CAVITY
100
Flatworms belong to which phylum?
Platyhelminthes
100
Explain how an entire coral reef can build up from just one coral polyp. To do so, you must describe the life cycle of coral polyps and what happens when a polyp dies.
A coral polyp reproduces asexually, so only one is needed to have babies. And coral polyps have hard skeletons. So those skeletons are left behind when they die. The new polyps will build on those skeletons and over time the mound will grow and grow.
200
Animals are classified in these groups, and there are 35 of them
PHYLA (PHYLUM IS THE SINGULAR)
200
These are responsible for pushing water through a sponge
COLLAR CELLS. They also catch microorganisms (to eat).
200
The two main BODY TYPES of cnidarians are
MEDUSA AND POLYP
200
Roundworms belong to which phylum?
Nematoda
200
Describe what a parasite is, and explain why a baby might technically qualify as being a parasite.
A parasite is an organism that lives in or on a host and takes resources from the host. Since a baby lives inside a mommy and takes food from its mommy, technically it is a parasite.
300
An animal that HAS a backbone would be classified as
A VERTIBRATE
300
Sponges reach what level of cellular organization?
CELLS. Sponges are very basic, so they do not have tissues, which means they cannot possibly have organs or organ systems
300
Cnidarians have what type of symmetry?
RADIAL
300
Planarians are non-parasitic, which means they are what?
FREE LIVING
300
Why is it that tapeworms are NOT good diet alternatives? What potential side effects could present themselves?
The problem is tapeworms eat EVERYTHING you ingest. Therefore, you would get NO food and potentially die from being malnourished (starved). Also, they could release eggs that hatch in your brain. If you were wondering, that's not good.
400
What is DNA?
A CHEMICAL THAT CONTROLS AN ORGANISM'S INHERITED CHARACTERISTICS
400
Water exits through which part of a sponge?
THE OSCULUM.
400
Cnidarians reach what cellular level of organization?
TISSUES. These tissues help them move along and swim
400
Worms are the simplest organism with this organ
A BRAIN
400
Describe why collar cells are vital to a sponge's survival?
Because they filter water through the sponge and trap microscopic organisms in the process, allowing the sponge to feed and stay healthy.
500
To be classified as an animal, you must satisfy these 4 criteria
1. MULTICELLULAR. 2. HETEROTROPHS 3. ABLE TO REPRODUCE 4. MOVE IN SOME WAY
500
Sponges have no natural predators. Why?
BECAUSE THEY LACK NUTRITIONAL VALUE AND MOST ARE VERY HARD
500
Where do cnidarians expel their undigested food?
THEIR MOUTHS. Which is where they take in their food too. Lovely though, huh?
500
Earthworm dropping make soil more ________, which means better for growing
Fertile
500
Worms look simple enough from the outside, so why is it that they have bilateral symmetry and NOT radial symmetry?
Because their insides are very complex. They have organs that repeat, and some that don't. They also have brains, which are located in their heads. The presence of a brain near the top/front of the body does not allow for radial symmetry.
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