lab6 Flashcards
(23 cards)
Parazoa are _____ and have _____ but do not have ________
multicellular
differentiated cells
true tissues
mollusks protect their bodies with
hard shells made of calcium carbonate
A body plan refers to
the number of tissue layers which make up an animals body and the presence of absence of a coelom (internal body cavity)
sponges made of
- spongin
- spicules of calcium carbonnate or silica
- sponge phylum is _______
- Our model organism is ______
- it’s subphylum is ____
- It’s symmetry is ____
- Reproduction is _____
- It’s habitat is _______
- food/energy is obtained by
- sessile or motile
- Some adaptations are ________
- Some friends are _________
- porifera
- grantia
- parazoa
- none
- Hermaphroditic, also asexual by fragmentation
- coastline of N. A. (intertidal regions)
- filter feeding
- motile gametes or something
- It is made of spongen and silica so their relatively indigestible
- Aplysina, Spongilla
- Jellyfish phylum is _______
- Our model organism is ______
- it’s subphylum is ____
- It’s symmetry is ____
- Reproduction is _____
- It’s habitat is _______
- food/energy is obtained by
- sessile or motile
- Some adaptations are ________
- Some friends are _________
- Body plan is
- have tentancles covered with cells called
- Cnidaria
- Hydra
- Eumetazoa
- radial
- Seperate sexes, also asexual by budding
- freshwater, sloughs, streams
- A gastrovascular cavity (mouth/anus)
- motile by
- Can shrink to a small size very rapidly
- Obelia, Sea Anemone, Coral, Portuges Man-of-War
- Diploblastic acoelomate
- Cnidoblasts (which contain nematocysts)
Doesn’t have medusa stage
Sponges internal cavity is called a
spongocoel
Water and wastes leave spongocoel through the ______
osculum
hermaphraditic
produces both male and female gametes
Eumetazoa have ____ and _____
true tissues and organs
Diploblastic has _____ (2)
It is held together by
outer layer of epidermis(from ectoderm)
inner layer of gastrodermis(from endoderm)
held together by a mesoglea
Do cnidarians have muscle tissue
No but they have muscle fibers
contraction of cnidarian muscle fibers coordinated by
the nerve net ( a diffuse group of nerve cells spread throughout the body)
When the mouth/anus of a cnidarian is closed
the gastrovascular cavity becomes a hydrostatic skeleton (meaning the body is supported by water pressure)
Polyps are ______
They are usually ______
with a _______ and ________
and attached to surfaces by _______
- part of a cnidarian life cycle,
- sessile forms
- body column, crown of tentacles surrounding the mouth/anus
- means of a basal disc
Medusa are________
which are _________
and have their tentacles _________
- basically upside down
- free swimming
- have their tentacles hanging beneath a dome-shaped body
- Flatworm phylum is _______
- Our model organism is ______
- it’s subphylum is ____
- It’s symmetry is ____
- Reproduction is _____
- It’s habitat is _______
- food/energy is obtained by
- sessile or motile
- Some adaptations are ________
- Some friends are _________
- Body plan is
- type of digestive sytem
- Platyhelminthes
- Dugesia
- Eumetazoa
- bilateral
- Usually sexual, hermaphroditic though usually cross fertilize, asexually by splitting into two different parts
- freshwater
- Carnivore of small aquatic animals, scavenger of almost any organic material
- motile, glides on a film of mucus by producing small muscular waves and cilia action
- Formation of true muscle cells as opposed to just muscle fibers
- Tapeworm (Taenia), Chinese Liver Fluke
- Triploblastic acoelomate
- Branched Gastrovascular cavity
mesoderm
misture of cells and fluids which lies between the endoderm and ectoderm
Platyhelminthes
has a mouth/anus at the end of pharynx (a branching mechanism to allow nutirents to all parts of the body)
- Nematode phylum is _______
- Our model organism is ______
- it’s subphylum is ____
- It’s symmetry is ____
- Reproduction is _____
- It’s habitat is _______
- food/energy is obtained by
- sessile or motile
- Some adaptations are ________
- Some friends are _________
- Body plan is
- type of digestive system
- Nematoda
- Turbatrix
- Eumetazoa
- Bilateral
- Seperate sexes
- Rotting fruits and vegetable
- a whip like motion to stir up food
- motile by a whip like motion
- Pharynx and tubular gut are more efficient for digestion
- C. elegans, Ascaris, Pinworm
- triploblastic pseudocoelomate
- tubular gut
What is the difference between eumetazoa and parazoa
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Why is cephalization important in the evolution of more complex animals
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Compare a gastrovascular cavity to a tubular gut
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