Chapter 19:
Development
Practice Test
1.
In starfish, morphogenesis begins when the blastula's outer layer of cells, the ________ , begins to push inward at one end.
a.
mesoderm
b.
endoderm
c.
meristem
d.
ectoderm
Hint
2.
Shortly after the gastrula stage, frogs, insects, and many marine animals develop into an immature stage that can live on its own called a(n) _______ .
a.
zygote
b.
larva
c.
egg
d.
pupa
Hint
3.
What is a leaflike storage organ that develops from the upper part of a plant embryo?
a.
radicle
b.
epicotyl
c.
cotyledon
d.
meristem
Hint
4.
What are changes that result in the formation of specialized parts in an embryo?
a.
metamorphosis
b.
cleavage
c.
germination
d.
differentiation
Hint
5.
What is a kind of development in which an animal undergoes a complete change in body form as it develops into a mature adult?
a.
metamorphosis
b.
morphogenesis
c.
germination
d.
differentiation
Hint
6.
What is the term used for the beginning of form or structure in a developing embryo?
a.
cleavage
b.
germination
c.
gastrulation
d.
morphogenesis
Hint
7.
What is the stalklike part of a plant embryo?
a.
meristem
b.
radicle
c.
hypocotyl
d.
epicotyl
Hint
8.
___________ begins immediately after fertilization of an egg by a sperm.
a.
Development
b.
Growth
c.
Differentiation
d.
Germination
Hint
9.
What membrane in an amniotic egg collects waste products from the developing embryo?
a.
egg shell
b.
amnion
c.
chorion
d.
allantois
Hint
10.
Which part of a plant embryo is the first to emerge from the seed when germination begins?
a.
epicotyl
b.
meristem
c.
radicle
d.
hypocotyl
Hint
