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Worksheets11.4 Sexual Reproduction
Total questions: 26
Worksheet time: 13mins
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 hormone is inhibited during pregnancy in order to prevent contractions of the uterus?
Oxytocin
Progesterone
Estrogen
FSH
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
Through what process does a spermatid become a functioning spermatozoan?
Mitosis
Differentiation
Fertilization
Meiosis
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
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.
Melatonin is secreted by
The hypothalamus during the day
The liver during the winter
The pineal gland during the night
The pancreas during the day The pancreas during the day
Which response takes place when blood glucose levels are low?
Glucagon is released from the α cells of the pancreas
Glucagon is released from the β cells of the pancreas
Insulin is released from the α cells of the pancreas
Insulin is released from the β cells of the pancreas Insulin is released from the β cells of the pancreas
What secretes FSH (follicle-stimulating hormone)?
ovary
testis
pituitary gland
placenta
Describe the levels of progesterone & FSH during the first few days of the menstrual cycle.
Progesterone remains and FSH are both low.
Progesterone is low, and FSH begins to increase.
Progesterone increases but FSH remains low.
Progesterone and FSH both decrease.
Iodine is added to salt to prevent deficiencies of a mineral needed for the proper function of
the liver
the pancreas
the hypothalamus
the thyroid gland
Where do most secretions from endocrine glands flow to?
Blood
Skin
Digestive gut
Ducts
Why is progesterone important during pregnancy?
It develops the placenta.
It maintains the endometrium.
It acts on fertilization.
It inhibits implantation. It inhibits implantation.
Which of the following is responsible for nourishing developing sperm?
Interstitial cells
Sertoli cells
Spermatogonia
Spermatids
The secondary oocyte will stop its development before fertilization in what stage of meiosis?
Metaphase I
Metaphase II
Prophase I
Prophase II
In order to prevent polyspermy, the egg cell contains
zona pellucida
cortical granules
follicle cells
calcium
Which part of the blastocyst develops into the placenta?
Inner mass cells
Inner fluid
trophoblast
Which of the following hormones will inhibit FSH and LH during pregnancy?
HCG
Oxytocin
Progesterone
Melatonin
The fetus and mother exchange materials through the placenta. Substances, such as carbon dioxide and urea travel through the
umbilical arteries towards the mother
umbilical veins towards the mother
umbilical arteries towards the fetus
umbilical veins towards the fetus
The fetus and mother exchange materials through the placenta. Substances, such as oxygen and glucose travel from
umbilical arteries towards the mother
umbilical veins towards the mother
umbilical veins towards the placenta
umbilical arteries towards the placenta
What happens to stimulate uterine contractions during birth?
An increase in progesterone
A decrease in LH
An increase in oxytocin
A decrease in oxytocin
