MCQ Test

Question 1

Fertilization in humans usually occurs in the:

Ovary

Uterus

Cervix

Ampullary–isthmic junction of fallopian tube

Question 2

Fertilization is defined as:

Formation of gametes

Fusion of sperms

Fusion of male and female gametes

Implantation of embryo

Question 3

The product of fertilization is called:

Embryo

Morula

Blastocyst

Zygote

Question 4

The chromosome number in human zygote is:

23

22

46

44

Question 5

Functional maturation of sperm in female tract is called:

Spermiogenesis

Capacitation

Fertilization

Cleavage

Question 6

Which structure of sperm helps in penetrating egg coverings?

Tail

Middle piece

Acrosome

Nucleus

Question 7

The egg coverings include:

Zona pellucida and corona radiata

Endometrium and chorion

Amnion and chorion

Myometrium and perimetrium

Question 8

Which reaction prevents polyspermy?

Acrosomal reaction

Cortical reaction

Capacitation

Cleavage

Question 9

Fusion of male and female pronuclei is called:

Fertilization

Cleavage

Syngamy

Implantation

Question 10

Fertilization restores:

Haploid condition

Polyploidy

Diploid condition

Triploidy

Question 11

Which chromosome determines sex of child?

X chromosome of mother

X chromosome of father

Y chromosome of mother

X or Y chromosome of father

Question 12

First division of zygote is:

Meiotic

Mitotic

Reductional

Amitotic

Question 13

Repeated mitotic divisions of zygote are called:

Fertilization

Gametogenesis

Cleavage

Implantation

Question 14

Cells formed during cleavage are called:

Blastocysts

Embryoblasts

Blastomeres

Trophoblasts

Question 15

Cleavage occurs while zygote is:

Stationary in uterus

Moving through fallopian tube

Implanted in uterus

In ovary

Question 16

The morula stage has approximately:

4 cells

8 cells

16–32 cells

64–128 cells

Question 17

Morula enters the uterus after:

1 day

2 days

3–4 days

7–8 days

Question 18

Morula is best described as:

Hollow ball of cells

Fluid-filled structure

Solid mass of cells

Differentiated embryo

Question 19

Conversion of morula into blastocyst occurs in:

Ovary

Fallopian tube

Cervix

Uterus

Question 20

Blastocyst is characterized by:

Solid structure

Fluid-filled cavity

Absence of differentiation

No outer layer

Question 21

The cavity of blastocyst is called:

Blastopore

Blastocoel

Amniotic cavity

Coelom

Question 22

The outer layer of blastocyst is:

Inner cell mass

Trophoblast

Endometrium

Chorion

Question 23

Inner cell mass of blastocyst forms:

Placenta

Uterine wall

Embryo

Amnion only

Question 24

Trophoblast later contributes to:

Embryo

Placenta

Amnion

Yolk sac

Question 25

Implantation occurs approximately:

1–2 days after fertilization

3–4 days after fertilization

6–7 days after fertilization

14 days after fertilization

Question 26

Implantation takes place in:

Ovary

Fallopian tube

Cervix

Uterus

Question 27

Implantation occurs during:

Follicular phase

Ovulatory phase

Luteal phase

Menstrual phase

Question 28

Which hormone prepares uterus for implantation?

Estrogen

Progesterone

FSH

LH

Question 29

Implantation is initiated by:

Inner cell mass

Trophoblast

Ovum

Zygote

Question 30

Endometrium becomes suitable for implantation due to:

Estrogen only

Progesterone

LH surge

FSH secretion

Question 31

Implantation leads to:

Menstruation

Fertilization

Pregnancy

Ovulation

Question 32

After implantation, the uterine lining is called:

Endometrium

Myometrium

Decidua

Chorion

Question 33

Implantation prevents menstruation because:

Ovulation stops

Estrogen decreases

Progesterone remains high

LH surge occurs

Question 34

Failure of implantation results in:

Pregnancy

Menopause

Menstruation

Ovulation

Question 35

Placenta begins to develop from:

Inner cell mass only

Endometrium only

Trophoblast and uterine tissue

Ovum only

Question 36

The stage suitable for implantation is:

Morula

Zygote

Blastocyst

Embryo

Question 37

Which enzyme helps sperm penetrate zona pellucida?

Pepsin

Amylase

Acrosin

Trypsin

Question 38

Which structure blocks polyspermy?

Zona pellucida

Corona radiata

Cortical granules

Trophoblast

Question 39

Cleavage divisions are:

Unequal and meiotic

Equal and mitotic

Reductional

Amitotic

Question 40

Embryonic development up to blastocyst occurs:

In ovary only

Entirely in uterus

During movement to uterus

After implantation only

Question 41

Implantation normally occurs on:

Anterior uterine wall

Lower uterus

Upper posterior uterine wall

Cervix

Question 42

Blastocyst remains free in uterus for:

1 day

2–3 days

5–6 days

10 days

Question 43

Which process activates ovum after sperm entry?

Cleavage

Cortical reaction

Implantation

Capacitation

Question 44

Which layer of blastocyst attaches to endometrium?

Inner cell mass

Amnion

Trophoblast

Blastocoel

Question 45

Fertilization brings genetic variation because:

Gametes are diploid

Zygote is haploid

Gametes are genetically different

Cleavage is unequal

Question 46

Blastocyst formation marks:

Beginning of pregnancy

End of fertilization

Readiness for implantation

End of cleavage

Question 47

Implantation is possible only if:

Ovum is alive

Endometrium is thick and vascular

Estrogen is absent

LH level is high

Question 48

Fertilization usually occurs within:

6 hours of ovulation

12 hours of ovulation

24 hours of ovulation

48 hours of ovulation

Question 49

Which hormone maintains pregnancy after implantation?

Estrogen

Progesterone

FSH

LH

Question 50

The correct sequence is:

Zygote → Blastocyst → Morula

Morula → Zygote → Blastocyst

Zygote → Morula → Blastocyst

Blastocyst → Morula → Zygote

📘 MCQ Test

Question 1

Fertilization in humans usually occurs in the:

Question 2

Fertilization is defined as:

Question 3

The product of fertilization is called:

Question 4

The chromosome number in human zygote is:

Question 5

Functional maturation of sperm in female tract is called:

Question 6

Which structure of sperm helps in penetrating egg coverings?

Question 7

The egg coverings include:

Question 8

Which reaction prevents polyspermy?

Question 9

Fusion of male and female pronuclei is called:

Question 10

Fertilization restores:

Question 11

Which chromosome determines sex of child?

Question 12

First division of zygote is:

Question 13

Repeated mitotic divisions of zygote are called:

Question 14

Cells formed during cleavage are called:

Question 15

Cleavage occurs while zygote is:

Question 16

The morula stage has approximately:

Question 17

Morula enters the uterus after:

Question 18

Morula is best described as:

Question 19

Conversion of morula into blastocyst occurs in:

Question 20

Blastocyst is characterized by:

Question 21

The cavity of blastocyst is called:

Question 22

The outer layer of blastocyst is:

Question 23

Inner cell mass of blastocyst forms:

Question 24

Trophoblast later contributes to:

Question 25

Implantation occurs approximately:

Question 26

Implantation takes place in:

Question 27

Implantation occurs during:

Question 28

Which hormone prepares uterus for implantation?

Question 29

Implantation is initiated by:

Question 30

Endometrium becomes suitable for implantation due to:

Question 31

Implantation leads to:

Question 32

After implantation, the uterine lining is called:

Question 33

Implantation prevents menstruation because:

Question 34

Failure of implantation results in:

Question 35

Placenta begins to develop from:

Question 36

The stage suitable for implantation is:

Question 37

Which enzyme helps sperm penetrate zona pellucida?

Question 38

Which structure blocks polyspermy?

Question 39

Cleavage divisions are:

Question 40