NEW
Font size
S
M
L
XL
WorksheetsPrenatal development
Total questions: 24
Worksheet time: 12mins
Name
Class
Date
1.
1. The flexible cordlike structure connecting a fetus at the abdomen with the placenta.
a)
Umbilical Cord
b)
Puberty
c)
Amniotic Sac
d)
Embryo
2.
1. A female egg that has been fertilized.
a)
Amniotic Sac
b)
Placenta
c)
Infant
d)
Zygote
3.
1. The unborn young from the eighth week of pregnancy to birth
a)
Fetus
b)
Embryo
c)
Infant
d)
Adult
4.
1. A membranous vascular organ that develops in female mammals during pregnancy, lining the uterine wall and partially enveloping the fetus, to which it is attached by the umbilical cord.
a)
Fetus Amniotic Sac
b)
Umbilical Cord
c)
Placenta
d)
Yolk
5.
1. A thin membrane that completely surrounds the embryo and contains a protective fluid in which the embryo is immersed.
a)
Embryo
b)
Umbilical Cord
c)
Amniotic Sac
d)
Placenta
6.
What is the trophoblast?
a)
Future uterine lining
b)
Future heart
c)
Future placenta
d)
Future brain
7.
Which of the following is the correct order of stages of embryonic development?
a)
Fertilization, implantation, organogensis, fetal development
b)
Implantation, fetal development, organogenesis, fertilization
c)
Fertilization, fetal development, implantation, organogenesis
d)
Fetal development, implantation, organogenesis, fertilization
8.
In mammals, the placenta is essential to the embryo for
a)
nutrition, reproduction, and growth
b)
nutrition, respiration and excretion
c)
locomotion,respiration, and excretion
d)
nutrition, reproduction, and excretion
9.
The diagram below represents one stage during the human reproductive process. A function of structure A is to
a)
remove nutrients from the fetus
b)
provide the fetus with metabolic wastes
c)
remove all toxins from the blood of the mother
d)
provide for the exchange of oxygen and carbon dioxide
10.
Base your answer on the diagram below and on your knowledge of biology. The arrows in the diagram represent processes. Process B is known as
a)
meiosis
b)
oogenesis
c)
differentiation
d)
germination
11.
Nondisjunction during meiosis I of oogenesis will result in eggs that have
a)
the normal number of chromosomes.
b)
one too many chromosomesome or less than the normal number of chromosomes.
12.
In humans, gametogenesis results in the formation of
a)
diploid egg and sperm
b)
cells
c)
gametophytes.
d)
haploid egg and sperm cells
13.
In what process does a fertilized egg undergo cell division without further growth?
a)
cleavage
b)
gastrulation
c)
differentiation
d)
implantation
14.
The proper order of embryonic development is
a)
morula-cleavage-blastula-gastrula.
b)
blastula-cleavage-morula-gastrula.
c)
cleavage-morula-blastula-gastrula.
d)
gastrula-cleavage-blastula-morula.
15.
During the formation of an embryo, the hollow ball of cells having a fluid-filled cavity is called
a)
morula.
b)
blastula.
c)
blastocoel.
d)
gastrula.
16.
Differentiation is characterized by
a)
cellular division and growth.
b)
cells becoming specialized in structure and function.
c)
body parts being shaped and patterned into a specific form.
d)
None of the choices are correct.
17.
Which system develops first in the embryo?
a)
reproductive
b)
circulatory
c)
nervous
d)
respiratory
18.
What part of the blastocyst will develop into the human embryo and eventually into a fetus?
a)
archenteron
b)
trophoblast
c)
blastopore
d)
inner cell mass
19.
Which of the following structures is NOT one of the extraembryonic membranes associated with the human embryo?
a)
chorion
b)
placenta
c)
amnion
d)
allantois
20.
Which association of structure and function is incorrect?
a)
chorion - gas exchange
b)
allantois - waste storage
c)
amnion - blood vessels
d)
yolk sac - food storage
21.
Which of the following serves as the first site of blood formation in the embryo?
a)
yolk sac
b)
amnion
c)
allantois
d)
chorion
22.
What is the correct series of events during parturition(at birth)?
a. The amnion breaks.
b. The cervix dilates.
c. ACTH causes the adrenal cortex to release androgens into the bloodstream.
d. Prostaglandins and oxytocin are produced.
e. The baby is born and the umbilical cord is cut.
f. The placenta is delivered.
a. The amnion breaks.
b. The cervix dilates.
c. ACTH causes the adrenal cortex to release androgens into the bloodstream.
d. Prostaglandins and oxytocin are produced.
e. The baby is born and the umbilical cord is cut.
f. The placenta is delivered.
a)
c - d - a -b - e - f
b)
a - d - b - c - e - f
c)
c - d - b - a - e - f
d)
c - d - b - f - a - e
23.
The trophoblast will provide nourishment for the embryo and give rise to the placenta.
TRUE/FALSE
TRUE/FALSE
a)
TRUE
b)
FALSE
24.
The amnion surrounds the embryo and bathes it in a protective fluid.
TRUE/FALSE
TRUE/FALSE
a)
TRUE
b)
FALSE
Reset
