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WorksheetsEmbryology and Evolutionary Relationships
Total questions: 15
Worksheet time: 12mins
Name
Class
Date
1.
This period is generally divided into three: germinal, embryonic, and fetal.
a)
common ancestry
b)
egg
c)
embryonic stages
d)
development
2.
A change in the inherited characteristics of an organism over time is ________
a)
evolution.
b)
development.
c)
growth.
d)
ancestry.
3.
A group of cold-blooded animals which lay eggs and have skins covered with small hard plates called scales, are___________
a)
reptiles.
b)
mammals.
c)
birds.
d)
armadillos.
4.
Any of various warm-blooded vertebrate animals characterized by a covering of hair on the skin and, in the female, milk-producing mammary glands for nourishing the young are called_________
a)
mammals.
b)
reptiles.
c)
birds.
d)
penguins.
5.
Another word for specific parts that form an organ, system, or living thing is __________.
a)
structure.
b)
vertebrae.
c)
forelimb.
d)
organism.
6.
_____________ is the study of embryos to see how their similarities and differences indicate an evolutionary relationship.
a)
Paleontology
b)
Common ancestry
c)
Homologous structure
d)
Embryology
7.
An organic vessel where an embryo develops is called _____________
a)
an egg.
b)
a common ancestor.
c)
the tree of life.
d)
an embryonic stage.
8.
The series of changes which animal and vegetable organisms undergo in their passage from the embryonic state to maturity, from a lower to a higher state of organization is called ___________
a)
embryonic stage.
b)
common ancestry.
c)
development.
d)
growth.
9.
The most recent ancestral form or species from which two different species evolved is known as ________________________.
a)
a common ancestor.
b)
an embryonic stage.
c)
development.
d)
evolution.
10.
Common ancestry relates to evolution because
a)
evolution only happens when there are common ancestors.
b)
Common ancestors make evolution happen more quickly.
c)
evolution can never take place with common ancestors.
d)
the more two organisms have in common, the more recent is their common ancestor during their evolution.
11.
Which sentence below describes how reproduction in birds, reptiles, and mammals differ?
a)
Birds lay eggs and incubate them, reptiles lay eggs and let the sun incubate them, most mammals give live birth.
b)
Birds and mammals are warm blooded and care for their young.
c)
Bird, reptile, and mammal females produce eggs.
d)
Reptiles and birds both lay eggs.
12.
In stage one (top row) of these embryos, most of the embryos________
a)
look very similar.
b)
have very different features.
c)
show different stages of development.
d)
have only a tail if they are non-human.
13.
In stage 2 (middle row) fish embryos _________
a)
are very different bird and mammal embryos.
b)
are still very similar to bird and mammal embryos.
c)
show arm and leg buds.
d)
are the only embryos with tails.
14.
In the the third embryonic stage (bottom row), mammal embryos _____
a)
have more characteristics in common with each other than with reptiles or birds.
b)
are still hard to tell from reptiles and birds.
c)
have the same features as fish, reptiles, and birds.
d)
do not have tails.
15.
The more similar the stages of embryonic development, the more likely that organisms share ____________
a)
a common ancestor.
b)
embryos.
c)
eggs.
d)
embryology.
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