Protochordates-2 - Exam 1 questions and answers PDF

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Exam 1 questions and answers...

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Protochordates TERMINOLOGY Taxonomy Metamerism Cephalization Notochord Dorsal nerve cord Pharynx Ventral heart Postanal tail Urochordata Cephalochordata Hemichordata Myomere Extinct vs extant SAMPLE QUESTIONS The name _________ is a reference to the fact that the notochord extends into the head. a. hemichordata

b. urochordata

c. cephalochordata

d. chordata

Which set of 4 characteristics is found ONLY in chordates? a. pharyngeal gill slits, dorsal nerve cord, notochord, postanal tail b. pharyngeal gill slits, deuterostome, notochord, postanal tail c. pharyngeal gill slits, cranium, deuterostome, notochord d. pharyngeal gill slits, nerve cord, notochord, metamerism The term urochordate means ________________. a. notochord in head c. half chordate

b. notochord in tail d. possesses vertebrae

Which of these is the correct taxonomy for a sea squirt? a. kingdom - animalia; phylum - chordata; subphylum - urochordata b. kingdom - animalia; phylum - vertebrata; subphylum - cephalochordata c. kingdom - chordata; phylum - animalia; subphylum - urochordata d. kingdom - vertebrata; subkingdom - animalia; phylum – cephalochordate

All of the following are members of the phylum Chordata except __________. a. Urochordata

b. Cephalochordata

c. Hemichordata

d. Vertebrata

All of these are characteristics of all chordates except _________. a. a postanal tail c. pharyngeal gill slits

b. a cranium d. a dorsal nerve cord

The name ______ is a reference to the fact that the notochord is in the tail. a. hemichordate

b. urochordata

c. cephalochordata

d. chordata

c. heart

d. all of these

Which of these is unique to chordates? a. brain

b. notochord

1Which of these characteristics is only found in Chordates? a. metamerism

b. cephalization

c. ventral heart

d. deuterostome

2Which of these is a protochordate, but does NOT belong to the phylum Chordata? a. vertebrata

b. urochordata

c. hemichordata

d. cephalochordata

Which name means that the notochord is found in the tail? a. vertebrata

b. urochordata

c. hemichordata

d. cephalochordata

c. Chordata

d. Hemichordata

?3 3You belong to the phylum ___________. a. Vertebrata

b. Cephalochordata

The sea squirt ___________. a. retains a notochord throughout life c. only has a notochord as an adult

b. only has a notochord when it’s a larva d. never has a notochord

Which of these is a vertebrate? a. sea squirt

b. acorn worm

c. lamprey

d. all of these

The evolutionary history of a group is the definition of _____________. a. monophyly

b. neoteny

c. ontogeny

d. phylogeny

List 4 characteristics that are unique to chordates. 1. __post anal tail______________________________________ 2. __pharyngeal gill slits_____________________________________ 3. __ventral heart______________________________________ 4. __dorsal nerve cord______________________________________ 4List the five characteristics only chordates have. Post anal tail Pharyngeal Gill Slits Ventral Heart Dorsal Nerve Cord Notochord List four traits that chordates share with other animal groups. Bilateral Symmetry Mesmerism Mesoderm Lined Coelom Full Digestive Tract 3 germ layers Deuteresome

5Define the terms heterochrony and clade. Heterochrony: Alteration in timing and rate of development that changes the body form of the adult Clade: Any monophyletic group...