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WorksheetsFERTILIZATION AND FOETAL DEVELOPMENT
Total questions: 40
Worksheet time: 20mins
Where does fertilization take place?
Ovary
uterine linning
Vagina
Fallopian tube
During fertilization, nucleus in the head of sperm fuses with the ovum nucleus to form a ___________________
embryo
zygote
foetus
baby
Activation of digestive enzymes in this structure allow sperm to burrow through the zona pellucida.
Acrosome
Flagella
Head
Midpiece
What will happen to the first sperm that comes into contact with the egg membrane?
Their membranes will fuse and the sperm nucleus is pulled inside the egg
Their sperm membrane will become glued to the outside of the egg and remain there
Their sperm's DNA will be remain outside the cell
nothing happen
After the sperm has fused with the egg and entered, what events take place?
The pronuleus of the male and female fuse completing the process of fertilization
The pronuleus of the male and female separate completing the process of fertilization
Cilia pull zygote towards infundibulum
Cilia pull sperm towards infundibulum
What is the forth step of fertilization?
What is the second step of fertilization?
The part of the sperm highlighted in red is called the?
Midbody
Midpiece
Middle
Body
In what order does sperm travel through the female reproductive system?
Vagina > Uterus > Cervix > Fallopian Tubes
Vagina > Urethra > Cervix > Fallopian Tubes
Cervix > Vagina > Uterus > Fallopian Tubes
Vagina > Cervix > Uterus > Fallopian Tubes
Vagina > Cervix > Urethra > Fallopian Tubes
During fertilisation, nucleus in the head of sperm fuses with the ovum nucleus to form a ___________________
embryo
zygote
foetus
baby
After fertilisation, the zygote will divide to form ___________________
a baby
a foetus
an embryo
implantation
Name the process where the embryo implants onto the uterine lining of uterus.
Plantation
Implantation
Pregnancy
Development
An embrzo with 64 cells is called
morula
blastula
blastocyst
zygote
Name the hormone produced by cells around the embryo that maintains the corpus luteum during pregnancy.
Estrogen
Progesterone
hCG
FSH
What is the function of chorion?
To absorb shock in case of fall
To form blood cells
To provide nourishment for the fetus
to permit gas exchange
Which of the following does the nervous system arise from?
ectoderm
mesoderm
endoderm
epidermis
Which portion of the blastula becomes the embryonic placenta?
inner cell mass
embryonic disc
chorion
primitive streak
Which of the following is not one of the extraembryonic membranes?
chorion
amnion
placenta
allantois
During pregnancy progesterone prevents the degeneration of the corpus luteum.
true
false
During pregnancy, estrogen stimulates the continued development of the endometrium.
true
false
Embryogenesis takes place during
first 2 weeks after fertilization
first 4 weeks after fertilization
first 8 week after fertilization
first 12 week after fertilization
Which of the following is CORRECT regarding foetal development stages?
Zygote, cleavage, gastrulation, organogenesis, neurulation.
Zygote, cleavage, gastrulation, neurulation, organogenesis.
Zygote, cleavage, neurulation, gastrulation organogenesis.
Zygote, cleavage, organogenesis, gastrulation, neurulation.
The 32-cells stage of the embryo is a solid ball of blastomeres called
morula
blastocyst
blastocoel
trophoblast
The blastocyst has inner mass, blastocoel and_______.
trophoblast
blastula
morula
gastrula
What is the meaning of gastrulation?
a process by which the morula develop into blastocyst.
a process by which the blastocyst produce the organs of the body.
a process by which the three germ layers form various organs.
a process by which the blastocyst become three germ layers.
The neurulation refers to
the early stage in the formation of brain and notochord in vertebrates.
the early stage in the formation of brain and spinal cord in vertebrates.
the formation of notochord.
the early stage in the formation of spinal cord and hollow dorsal nerve cord.
Human muscle tissue is made up of
ectoderm
mesoderm
endoderm
germ layer
During an acrosome reaction, the acrosome
Detaches, allowing the sperm to penetrate
Releases enzyme that digest the outer layer of the egg
Secretes calcium ions, which cause the sperm to fuse with the egg
Releases inhibin, cause the sperm to bind to the egg
The embryo develops from this part of the blastocyst
trophoblast
inner cell mass
internal fluid
zygote
The hormone hCG is secreted from which structure?
morula
zygote
trophoblast
blastocyst
What does hCG do?
prevents the break down of the endometrial lining by degrading the corpus luteum
promotes the breakdown of the endometrial lining by degrading the corpus luteum
prevents the breakdown of the endometrial lining by maintaining the corpus luteum
promotes the breakdown of the endometrial lining by degrading the corpus luteum
What structure secretes hCG later in the pregnancy?
placenta
umbilical cord
foetus
umbilical cord
The main function of the placenta is to :
allow direct exchange of blood between the mother and fetus for nutrition.
facilitate gas and nutrient exchange between the fetus and mother.
support the weight of the developing fetus in the uterus.
store gases and nutrients for later delivery to the fetus.
How many chromosomes does every baby have?
23
46
12
24
Zygote undergoes its first_________ about 24 hours after fertilization.
mitotic division
meiotic division
binary fission
nuclear division
The cell that is make up the embryo known as
blastocoel
blastophore
blastomere
blastocyst
