BIO 370 Exam 1 questions and
answers graded A+
In your own words, describe how you would define a vertebrate. - correct answer ✔✔
Evolutionary relationships in a cladogram are based on the most parsimonious solution to a
comparison of:
a. Apomorphias
b. Homologies
c. Homoplasies
d. Synapomorphies
e. Sympleisiomorphies
f. I don't know the answer - correct answer ✔✔ d. Synapomorphies
Which of the following is not a vertebrate?
a. A hagfish
b. A synapsid
,c. An osteichthyan
d. An arthropod
e. A crocodylian
f. I don't know the answer - correct answer ✔✔ d. An arthropod
What do you think evolved first - the muscle system or the nervous system? Why? - correct
answer ✔✔
Which germ layer(s) are found only in vertebrate embryos?
a. Endoderm
b. Ectoderm
c. Mesoderm
d. Neural Crest
e. Both 3 and 4
f. Both 2 and 3
, g. Both 2 and 3
h. Both 1 and 2
i. I don't know the answer - correct answer ✔✔ d. Neural Crest
Ehlers-Danos Syndrome causes skin to stretch to great lengths, joints to be loose, and
abnormalities in blood vessel walls. A defect in which major tissue group could cause this?
a. Nervous
b. Muscle
c. Connective
d. Blood
e. Epithelial
f. I don't know the answer - correct answer ✔✔ c. Connective
From what you know about embryology and developmental biology, do you think the
Recapitulation Hypothesis is supported? Why or why not? - correct answer ✔✔ The theory of
recapitulation says that the development of an embryo of an animal goes through a series of
stages representing successive stages in the evolution of vertebrates This idea is not supported
by empirical evidence however because rather than a series of successive stages, animals
develop from less specific to more specific during embryology. Therefore, traits that are shared
among all vertebrates are going to be appear in early embryological stages as all vertebrates
share a common ancestor and therefore share those developmental traits. At no stage, does an
answers graded A+
In your own words, describe how you would define a vertebrate. - correct answer ✔✔
Evolutionary relationships in a cladogram are based on the most parsimonious solution to a
comparison of:
a. Apomorphias
b. Homologies
c. Homoplasies
d. Synapomorphies
e. Sympleisiomorphies
f. I don't know the answer - correct answer ✔✔ d. Synapomorphies
Which of the following is not a vertebrate?
a. A hagfish
b. A synapsid
,c. An osteichthyan
d. An arthropod
e. A crocodylian
f. I don't know the answer - correct answer ✔✔ d. An arthropod
What do you think evolved first - the muscle system or the nervous system? Why? - correct
answer ✔✔
Which germ layer(s) are found only in vertebrate embryos?
a. Endoderm
b. Ectoderm
c. Mesoderm
d. Neural Crest
e. Both 3 and 4
f. Both 2 and 3
, g. Both 2 and 3
h. Both 1 and 2
i. I don't know the answer - correct answer ✔✔ d. Neural Crest
Ehlers-Danos Syndrome causes skin to stretch to great lengths, joints to be loose, and
abnormalities in blood vessel walls. A defect in which major tissue group could cause this?
a. Nervous
b. Muscle
c. Connective
d. Blood
e. Epithelial
f. I don't know the answer - correct answer ✔✔ c. Connective
From what you know about embryology and developmental biology, do you think the
Recapitulation Hypothesis is supported? Why or why not? - correct answer ✔✔ The theory of
recapitulation says that the development of an embryo of an animal goes through a series of
stages representing successive stages in the evolution of vertebrates This idea is not supported
by empirical evidence however because rather than a series of successive stages, animals
develop from less specific to more specific during embryology. Therefore, traits that are shared
among all vertebrates are going to be appear in early embryological stages as all vertebrates
share a common ancestor and therefore share those developmental traits. At no stage, does an
