Animals Flashcards
What characteristics do all animals share? (4)
Multicellular, Eucaryotic, Heterotrophic, Moves
What are the different types of heterotrophs? (vore) in animals(4)
Carnivore, Herbivore, Omnivore, Parasites.
What is the difference between complete metamorphosis and incomplete metamorphosis?
Complete means complete change
Define bilateral symmetry.
You can only cut an organism in one way in order for them to be symmetrical.
Define radial symmetry.
You can cut an organism in any way, and they will be symmetrical. (As long as they are through the centre)
Define asymmetry.
No
What is ectoderm?
It is the outer layer of the body. It gives rise to skin, nervous system, feathers, scales, hair, nails. Anything is on the outside, it is ectoderm.
What are the three types of symmetry in animals?
Bilateral, Radial, asymmetrical
What is endoderm?
They are on the inside, kind of like the layer of skin in your mouth, your tube and you digestive system.
What do you call anything in between ectoderm and endoderm?
Mesoderm.
What is the difference between a diploblast and a triploblast?
Diploblast has two skin layers, but triploblast has three. Mesoderm is only present in triploblast.
T/F: Diploblast is the only one that has mesoderm.
False, Mesoderm is only present in triploblast.
What are the two types of metamorphosis?
Complete, incomplete
What are the two types of digestive body plans?
Complete, incomplete
What is the difference between the complete and incomplete body plan?
2/1 digestive entry/exit
What is coelom? (pronounced sea-lum)
Coelum is what fills between organs and body wall.
T/F: Organ is concealed inside the coelum
True
What is difference between pseudocoelomate and coelomate?
Psudo- means that it is not complete covered by coelum. This probably means that one of the borders is shared by endoderm.
What is a protome(?) / protostome
The first indent made is a mouth.
What is a deuterostome?
The first indent made a anus
What are the two types of development, then made a dent?
Protostome and deuterostome
What are the three types of coleom?
Acoelomate, Coelomate, Pseudocoelomate
What does sessile mean?
Don’t move
What does monoecious and hermaphrodite mean?
It has both sexes on same organism
What does filter feeders mean?
It eat whatever they can catch (stationary)
What are choanocytes?
Collar cells, they have flagellum to beat water to try and eat anything.
What do you call any organisms that eats whatever they can catch?
Filter feeders
What is the scientific name of collar cells?
Choanocytes
What is the term for both sexes on the same organism?
Monoecious or hermaphrodite
What do you call things that don’t move?
You - jkjk - Sessile
What do amoebocytes do in a sponge?
Everything
What organism have amoebocytes?
Sponges
What are the three materials that spicules can be made of?
Silica (Siliceous, spongin, calcium/calcareous)
What is the osculum?
Top of the sponge.
What do you call the top of the sponge?
Osculum
For a sponge, where are the food filtered?
At the collar
For a sponge, how do they digest food?
Endocytotsis, or it gets passed onto another cell (amoebocyte)
What are three jobs that amoebocytes must do?
Transport food, makes sex cells, and make spicules.
What is the role of gemmules?
They are sphere shaped collection of amebocytes surrounded by a tough layer of spicules, they can exist for long periods of time.
How do sponges get their food?
They are filter feeders, they pump water, and trap whatever nutrients that may pass through them.
Water enters the sponge through what?
Incurrent pore
What exits the sponge through what?
Osculum
What cells help the circulation of water in sponges?
Collar cells / choanocytes
What two substances give the sponge support?
Spongia, Spicules
What are epithelials?
They are cells on the outside of the sponge.
What do you call cells that are on the outer surface of the sponge?
Epithelials.
Cnidaria has what general characteristics?
Stinging cells
What symmetry do Cnidarias have?
Radial
Cnidarias have two body plans:
Tubular (polyp) (pointing up), and bell-shaped (medusa) (pointing down)
What is polyp?
Tubular body plan for Cnidarias that is pointing up.
How many layers of tissues does Cnidarias have?
2
How many layers of tissue does Poriforas have?
0
What is medusa?
Bell shaped body plan for Cnidarias, pointing down
What is the difference between monoecious and dioecious?
Monoecious means that reproductive organs of both sexes are present in the same organism, but the dioecious means that reproductive organs are not present in the same organism, and only one of them are present.
What is mesoglea?
They are squishy stuff in cniderias.
Does medusa have more mesglea then polyp?
Yes
What do you call squishy stuff found in Cniderias?
Mesoglea
Name the two functions of the gastrovascular cavity?
Digest and the movement of materials.
What do you call stinging cells?
Cnidocyte
Cnidocyte has a capsule called…
Nematocyst
Nematocyst contains what?
A long coiled thread / paralyzing toxins
What can nematocytes be fill with?
Paralyzing toxins
What is a nematocyst?
They are a capsule in cnidocytes that can sting others.
Cnidocytes are known as what cells?
Stinging cells
T/F: Cnidarias only reproduce asexually.
False, it depends.
Explain hope and pray reproduction.
Medusas produces sperms and eggs into the water, hoping that they will come together.
T/F: Hope and pray reproduction only happens with the medusa form.
True.
How do Polyps reproduce?
They produces asexually through budding or fragmentation. (They could produce sexually as well?)
T/F: Fragmentation happens with both medusas and polyps.
True
Do cnidarias have muscle tissues?
Yes
Do poriferas have nerves?
No.
Do cnidarias have nerves
Yes
What types of nerves do cnidarias have?
Nerve nets