Animals II Flashcards
(24 cards)
All Bilaterans are _______(diplo/triplo)blastic
Triploblastic
True/False. All Bilaterans have true HOX Genes
true
In segmented animals, HOX genes control what else in addition to anterior to posterior development?
The type of appendages formed by each segment
What are the two groups of Bilaterans?
Protostomes and Deuterostomes
Eumetazoans are sister to what group?
Sponges
Name the 3 groups of Protostomes
Arrow worms, lophotrocozoan, and ecdysozoans
Lophos are characterized by
filter feeding structure known as a lophophore and/or cilia bearing larvae known as trocophores
Arrow worms are protostomes but their embryology is much like ______________
Deuterostromes
Describe the body cavity of Arrow worms
acoelmate
T/F Arrow worms are hermaphroditic
true
T/F Lophos are monophyletic
False
Name the 7 groups of Lophos
Bryozoans, Flatworms, Rotifers, Ribbon worms, Brachiopods, Annelidsn Mollusks. BAE FLY ROGERS ROVER BEFORE ANNAS MEETING
T/F flatworms are acoelmate
true
Name the 4 major groups of flatworms
Turbellaria, Monogenea, Trematoda, Cestoda
T/F all four major flatworm groups are parasitic
False. Turbellaria are mostly free living predators and scavengers.
Name an example species of Terbellaria
Planaria
Describe all you know about Rotifers.
Complete gut, pseudocoelmate, corona captures prey, sexual/asexual, genetic recombination.
Describe all you know about Ribbon Worms (Nemertea)
complete gut, circulatory system, coelmate. Regenerative.
What is the only group of Bilaterans that are acoelmate?
Flatworms
T/F All molluscs have a radula
False, only some do.
T/F Mollusks have a visceral mass, foot, and mantle
true
T/F Mollusks are segmented
false
T/F Tapeworms and flukes have a body cavity
false
T/F tapeworms and flukes have a mouth that opens into a blind sac
true
