Layers!!! And Development
having a body derived from three embryonic cell layers
What is triploblastic?
Sponges are distinct from other animals for this reason
What is they have no tissue?
a horseshoe-shaped structure bearing ciliated tentacles around the mouth in certain small invertebrates
What is a lophophore?
a highly muscular, ventral organ used primarily for locomotion, anchoring, and burrowing in Mollusca
What is a foot?
has the most species of all animal groups
What is Phylum Arthropoda?
A transformation of a single-celled zygote into a
What is a blastula?
Pump water through intricate internal canal systems to capture microorganisms like bacteria, plankton, and detritus
What is filter-feeders?
a type of free-swimming planktonic larva with several bands of cilia
What is a trochophore?
a specialized, tongue-like anatomical feeding organ found in most mollusks
What is a radula?
Mussels were overharvested to make these
What are buttons?
All bilaterians have ____ layers
What is 3?
Reef-building corals create rigid skeletons by secreting
What is calcium carbonate?
Both tapeworms and this were discussed as phylums under Platyhelminthes in our lecture.
What is Planaria?
a highly muscular, wedge-shaped foot that acts as a hydraulic anchor
What is a mollusc's adaptation for burrowing?
The animal group that has had the most extinctions
What are nonmarine mollusks?
Results in the layers of embryonic tissue
What is gastrulation?
has stinging cells known as nematocysts, show radial symmetry, and have a polyp and medusa form
What is a cnidarian?
A type of excretory feature that is characteristic (not unique) of a flatworm
What is flame cells?
First evolved on land and is impermeable to water in ecdysozoa
What is an exoskeleton?
Phylum Nematoda is the most "this" type of organism
What is abundant?
In most animals, the gastrula must lead to at least ___ layers.
What is 3?
a membranous structure found in certain cnidarian medusae, such as hydromedusae
What is a velum?
This phylum of Lophotrochozoa only contains individuals containing both male and female reproductive parts as opposed to separate individuals containing those parts.
Platyhelminthes (flatworms)
Grasshoppers have this kind of metamorphosis
What is incomplete?
Alabama ranks #1 in biodiversity (highest number of species) in the US for these groups of freshwater invertebrates
What are mussels, snails, and crayfish?