Chapter 19:
Development
Practice Test
1.
What is an animal embryo that has developed three layers of cells?
a.
larva
b.
nymph
c.
gastrula
d.
radicle
Hint
2.
In starfish, morphogenesis begins when the blastula's outer layer of cells, the ________ , begins to push inward at one end.
a.
meristem
b.
endoderm
c.
ectoderm
d.
mesoderm
Hint
3.
In humans, where does gas exchange take place between an embryo and its mother?
a.
in the chorion
b.
through the placenta
c.
through the umbilical cord
d.
in the allantois
Hint
4.
What organ connects the embryo to the placenta?
a.
the oviduct
b.
the umbilical cord
c.
the uterine wall
d.
the cervix
Hint
5.
Which of these is a stage of development found only in animals that undergo incomplete metamorphosis?
a.
larva
b.
pupa
c.
egg
d.
nymph
Hint
6.
What membrane in an amniotic egg collects waste products from the developing embryo?
a.
amnion
b.
egg shell
c.
allantois
d.
chorion
Hint
7.
What is a series of changes in a zygote that lead to the formation of a mature organism?
a.
germination
b.
development
c.
growth
d.
differentiation
Hint
8.
What is the stalklike part of a plant embryo?
a.
meristem
b.
epicotyl
c.
hypocotyl
d.
radicle
Hint
9.
What is a leaflike storage organ that develops from the upper part of a plant embryo?
a.
radicle
b.
cotyledon
c.
meristem
d.
epicotyl
Hint
10.
Once the archenteron has formed, the cells it is made up of are called __________ .
a.
ectoderm
b.
meristem
c.
endoderm
d.
mesoderm
Hint
