Animal Diversity 2 Flashcards
Body plan that is a tube in a tube must be….
triploblastic
What does the ectoderm germ layer give rise to?
The epidermis and nerve tissue
What does the endoderm germ layer give rise to?
It lines the developing digestive tube, called the archentron
Gives rise to the lining of the gut, lungs, liver
What does the mesoderm give rise to?
Bones, muscles, heart, circulatory system, internal sex organs
This phylum consists of predators, suspension feeders, herbivores, parasites
Marine (clams, oysters, scallops, squid, snails, mussels) and freshwater species (snails and slugs).
Phylum Mollusca
Repetition of body parts, leads to….
Specialized appendages
Body parts of Mollusca
- foot: muscular tissue
- visceral mass: digestive, circulatory, respiratory, and reproductive organs are located
- mantle: two folds of skin that sandwich the visceral mass
- Shell
- gills
This includes the digestive, circulatory, respiratory and reproductive organs
Visceral mass
This is to fold of skin that sandwich the visceral mass
Mantle
In some Mollusca species the ___________ may secrete a shell
Mantle
A rasping tongue is called….
Is it present in all?
Radual
No
Most abundant and diverse. Snails, periwinkle‘s, Abalones, slugs, limpets. Most have a single shell, but shells may be absent. Many are herbivores and have a radula, grasping teeth in the form of a tongue like organ. Some can use the radula to drill through shells.
“Belly foot”
Gastropods
Gastropods are also know as?
Belly foot
Cephalopods are also know as?
“Head foot”
-squids, octopuses, and nautiluses. Have a well developed head in advance ice. Foot is modified into tentacles. All are carnivores. Squids and cuttlefish have their shell in and-enclosed into the mantle
Head foot
Cephlapods
