Bio 172: Animal Diversity,
Form and Function Exam
Questions with Correct
Answers
Features Used to Classify Animals3 Which of the following is not true of the coelom?
A. It may be present in triploblastic organisms
B. It is a cavity that often houses internal organs
C. it is derived from mesoderm
D. it is present in all animals
E. it usually contains fluids - Correct Answer: D. it is present in all animals
Animal Phylogeny Which of the following is true of the animal phylogenetic tree?
A. Fossils provide the best source of information for determining the animal phlogenetic tree
B. Major accepted clades of the animal phylogeny have remained constant over the past 50 years
C. Future DNA evidence is likely to demonstrate that the Bilateria is the most primitive animal clade
D. Eumetazoans iinclude more species than Metazoans
E. As more DNA is sequenced and analyzed from more animals, future changes to major surviving clades
of the animal phylogenetic tree become less likely - Correct Answer: E. As more DNA is sequenced and
analyzed from more animals, future changes to major surviving clades of the animal phylogenetic tree
become less likely
Features Used to Classify Animals4 The presence of which of the following traits in the early
developmental stages of an animal would NOT allow you to determine if the animal is a protostome or a
deuterostome?
A. radial cleavage
B. presence of endoderm, mesoderm, and ectoderm
C. coelom formed by splitting of the mesodermal mass
D. anus forms from the blastopore
, E. the developmental fate of each embryonic cell is fully determined - Correct Answer: B. presence of
endoderm, mesoderm, and ectoderm
The Evolutionary History of the Animal Kingdom Which of the following is not play a major role in Earth's
post-Cambrian animal evolution
A. evolution among plants
B. meteor strikes
C. change in distance between the Earth and the sun
D. shift in Earth's geography
E. cataclysmic volcanic eruptions - Correct Answer: C. change in distance between the Earth and the sun
The Evolutionary History of the Animal Kingdom Which of the following is true about animal
evolutionary history? E the Cambrian explosion was caused by a rapid increase in Earth's atmospheric
oxygen
A. the Cambrian explosion led to the appearance of the Ediacaran biota
B. the Cambrian explosion occurred around 100 million years ago
C. several extant animal phyla fist appear in the fossil record from the Cambrian period
D. many fossils dating from the Cambrian explosion represent species that survive today - Correct
Answer: C. several extant animal phyla fist appear in the fossil record from the Cambrian period
Features Used to Classify Animals Match the animal group with its type of symmetry
A. bilateral symmetry
B. radial symmetry
C. rotational
D. asymmetry - Correct Answer: 1: Ctenophora: C
2: Porifera: D
3: Nematoda: A
4: Adult Cnidaria: B
Features of the Animal Kingdom Which of the following is not a monophyletic group of animals?
Form and Function Exam
Questions with Correct
Answers
Features Used to Classify Animals3 Which of the following is not true of the coelom?
A. It may be present in triploblastic organisms
B. It is a cavity that often houses internal organs
C. it is derived from mesoderm
D. it is present in all animals
E. it usually contains fluids - Correct Answer: D. it is present in all animals
Animal Phylogeny Which of the following is true of the animal phylogenetic tree?
A. Fossils provide the best source of information for determining the animal phlogenetic tree
B. Major accepted clades of the animal phylogeny have remained constant over the past 50 years
C. Future DNA evidence is likely to demonstrate that the Bilateria is the most primitive animal clade
D. Eumetazoans iinclude more species than Metazoans
E. As more DNA is sequenced and analyzed from more animals, future changes to major surviving clades
of the animal phylogenetic tree become less likely - Correct Answer: E. As more DNA is sequenced and
analyzed from more animals, future changes to major surviving clades of the animal phylogenetic tree
become less likely
Features Used to Classify Animals4 The presence of which of the following traits in the early
developmental stages of an animal would NOT allow you to determine if the animal is a protostome or a
deuterostome?
A. radial cleavage
B. presence of endoderm, mesoderm, and ectoderm
C. coelom formed by splitting of the mesodermal mass
D. anus forms from the blastopore
, E. the developmental fate of each embryonic cell is fully determined - Correct Answer: B. presence of
endoderm, mesoderm, and ectoderm
The Evolutionary History of the Animal Kingdom Which of the following is not play a major role in Earth's
post-Cambrian animal evolution
A. evolution among plants
B. meteor strikes
C. change in distance between the Earth and the sun
D. shift in Earth's geography
E. cataclysmic volcanic eruptions - Correct Answer: C. change in distance between the Earth and the sun
The Evolutionary History of the Animal Kingdom Which of the following is true about animal
evolutionary history? E the Cambrian explosion was caused by a rapid increase in Earth's atmospheric
oxygen
A. the Cambrian explosion led to the appearance of the Ediacaran biota
B. the Cambrian explosion occurred around 100 million years ago
C. several extant animal phyla fist appear in the fossil record from the Cambrian period
D. many fossils dating from the Cambrian explosion represent species that survive today - Correct
Answer: C. several extant animal phyla fist appear in the fossil record from the Cambrian period
Features Used to Classify Animals Match the animal group with its type of symmetry
A. bilateral symmetry
B. radial symmetry
C. rotational
D. asymmetry - Correct Answer: 1: Ctenophora: C
2: Porifera: D
3: Nematoda: A
4: Adult Cnidaria: B
Features of the Animal Kingdom Which of the following is not a monophyletic group of animals?
