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Worksheets11.4 Sexual Reproduction (IB Biology)
Total questions: 20
Worksheet time: 22mins
The diagram shows a section through the seminiferous tubules. What is the cell labelled X?
Spermatid that will differentiate into sperm
Primary spermatocyte that will undergo meiosis to form secondary spermatocytes
Sertoli cell that provides nutrients
Stem cell that will divide by mitosis to form spermatogonia
The image shows a light micrograph of tissue stained with a dye that binds to the nucleic acids in a cell. What is the major purpose of the tissue depicted in the image?
Absorption of digested food
Production of insulin
Spermatogenesis
Fertilization
The image shows a flow chart. Which sequence would correspond to the stages shown in the flow chart?
sexual intercourse--ovulation--pregnancy--maintenance of endometrium
disintegration of corpus luteum--pituitary gland activity-estrogen production-- ovulation
mitosis--growth--differentiation--pregnancy
implanted embryo--corpus luteum of ovary--progesterone production--maintenance of endometrium
If the ovaries of a pregnant woman have to be removed during the first five months of pregnancy, a miscarriage results and the pregnancy fails. If the ovaries are removed in the last four months of pregnancy, the miscarriage does not occur. What is the reason for this?
After the fifth month, the ovaries can regenerate rapidly.
The placenta produces sufficient hormones to sustain the pregnancy.
The pituitary gland takes over the function of sustaining the pregnancy.
Before removal the ovaries produce sufficient hormones to sustain the pregnancy.
Which interaction occurs between hormones in the reproductive systems of women?
Estrogen from the corpus luteum stimulates secretion of FSH.
Estrogen from the follicle stimulates secretion of LH at midcycle.
Progesterone stimulates secretion of LH after ovulation.
During birth, progesterone stimulates secretion of oxytocin.
The diagram shows the female reproductive system. Which structures do K and L identify?
K: endometrium L: uterine wall
K: placenta L: endometrium
K: amnion L: placenta
K: fetus L: uterine wall
Which hormone is inhibited during pregnancy in order to prevent contractions of the uterus?
Oxytocin
Progesterone
Estrogen
FSH
The diagram shows the exchange processes that take place in the placenta between the maternal and fetal blood. Which process requires endocytosis?
A
B
C
D
What does the blastocyst secrete?
HCG
Estrogen
ADH
Progesterone
What helps to prevent polyspermy?
The unequal division of oocytes
The placental barrier
The contraceptive pill
The cortical reaction
Where does the acrosome reaction occur?
A
B
C
D
The image shows a section of a seminiferous tubule. What is shown by the letter X?
Meiosis I in a primary spermatocyte
A spermatogonium undergoing mitosis
Meiosis II in a secondary spermatocyte
A spermatid undergoing meiosis
Through what process does a spermatid become a functioning spermatozoan?
Mitosis
Differentiation
Fertilization
Meiosis
The image shows the male reproduction system. Where is prostate cancer likely to start developing?
In X only
In Y and Z only
In Z only
In X, Y and Z
What is the function of the epididymis in the male reproduction system?
To stimulate sperm production by secreting testosterone
To store the sperm in the final stages of maturation
To provide fluids to nourish the sperm
To transport the sperm from the testes to the urethra
From where is human chorionic gonadotropin (HCG) secreted in early pregnancy?
Embryo
Corpus luteum
Ovary
Pituitary gland
Which event takes place during normal fertilization?
The acrosome fuses with the egg membrane.
The entire sperm cell enters the egg cytoplasm.
The egg divides to form a blastocyst.
The cortical granules fuse with the egg membrane.
What does the sperm duct do?
It stores sperm.
It allows the degeneration of the sperm cells themselves.
It allows the transit of sperm from the testicles to the outside of the body.
It produces testosterone
Where does the cervix lie?
On the outside of the female genitals.
Next to the ovaries.
On the fallopian tube.
The narrow passage forming the lower end of the uterus.
How is a zygote formed?
A sperm meets an egg inside the fallopian tube.
A sperm meets an egg inside the uterus of a female.
An egg meets a sperm inside the vagina of a female.
A sperm meets an egg inside the cervix of a female.
