Lophotrochozoa Flashcards
LOPHOTROCHOZOA
What are lophotrochozoa?,
Non molting protostomes
What does eucoelomate mean?
Having a body cavity that is coelom.
What are the phyla of Lophotrochozoa?
Rotifera, Gastrotricha, Annelida, Mollusca
What are phylum Rotifera?
Wheel bearing
What is the wheel called in rotifera?
Corona
What is metachronal synchrony (rotifera)
When the cilia beat in a way that makes it look like ti spinning, also creates current that pulls in food to the mastak
What is a mastak (rotifera)
Modified mouth
What is phylum Gastrotricha?
Hair bellies
Where can you find gastrotricha?>
Aquatic habitats
Are gastrotricha modal or cecil?
Modal, and covered in cilia
What is phylum Annelida?
Segmented worms (Earthworms) They have little rings
What are somites? (Annelida)
Units of repeated organs ect
What are nephridia (Annelida)
They help with cleaning waste from circulatory system, a pair of them in each segment
What are the classes of Annelida?
Polychaeta, Oligochaeta, and Hirudinea
What is class polychaeta?
They have lots of setae and have a head region with eyes.
What is a parapodia? (polychaeta)
It is a lateral appendage to help move, exchange gas, and feed
Sedementary versus Errant
Sedimentary don’t move (featherduster worm and lugworm), errant move around (sea mouse and pololo worm).
What is class Oligochaeta
They are “few setae” and are marine, freshwater, and terrestrial
What is a citellum?
Band structure that produces mucus and helps with reproduction
Do Oligochaeta have male or female gamete producing structures?
Both
What is class Hirudinea
The leeches, marine freshwater and terrestrial
What does ectoparasite mean?
Latch on to the outside of host
What does hemophore mean?
They eat blood
Do leeches have seta?
Not very defined
Phylum Mollusca
This is the second biggest phyla of all animals. They range from microscopic -> 10 meters in size.
What are some economically important traits of Mollusca
Food, pearls, shells, and fossils.
What are some parts of Mollusca?
Foot, mantle, radula, head, and developed organ sustem. They have cristalline style that pulls mucus.
What are the classes of Mollusca?
Polyplacophora, gastropoda, bivalvia, and cephalopoda.
Class Polyplacophora
“Gum boots” have 8 valves embedded into mantle, foot is very muscular. They have radulata to grasp algae.
Class Gastropoda
Means belly foot. Snails, slugs, abalone, conches. Torsion twisted shells in spiral form that allows for growth over time
Class Bivalvia
They have 2 valves. Shells. Oysters, clams, muscles, ect. They have siphons to bring water in and out. They have gills for gas eschange, feeding, and reproduction
Class Cephalopoda
Head feet: squid, octopus, cuttlefish, ect. They have arms and tentacles
