Science
Human Reproductive System
Grade 9 · Middle School
Answer every question first, then press Finish to see your score and explanations.
- Question 1 of 20Easy
The male reproductive organ that produces sperm is ...
- Question 2 of 20Easy
The female reproductive organ that produces egg cells (ova) is ...
- Question 3 of 20Easy
The event in which an egg cell meets a sperm cell is called ...
- Question 4 of 20Easy
The place where an embryo or fetus develops inside a woman's body is ...
- Question 5 of 20Easy
The hormone that triggers secondary sexual characteristics in males is ...
- Question 6 of 20Easy
The male sex cell in humans is called ...
- Question 7 of 20Medium
Fertilization in humans generally occurs inside the ...
- Question 8 of 20Medium
The hormones estrogen and progesterone in women are produced by the ...
- Question 9 of 20Medium
Ovulation is the event of ...
- Question 10 of 20Medium
In a 28-day menstrual cycle, ovulation usually occurs around day ...
- Question 11 of 20Medium
The main function of the placenta during pregnancy is to ...
- Question 12 of 20Medium
An egg cell that has been fertilized by a sperm is called ...
- Question 13 of 20Medium
Which of the following is a sexually transmitted disease?
- Question 14 of 20Medium
The process of the embryo embedding into the uterine lining (endometrium) is called ...
- Question 15 of 20Hard
The correct order of sperm's path from where it is formed until it leaves the body is ...
- Question 16 of 20Hard
The hormone produced by the pituitary gland that triggers ovulation is ...
- Question 17 of 20Hard
A woman does not ovulate in a certain menstrual cycle. The most likely result in that cycle is ...
- Question 18 of 20Hard
After ovulation, the follicle that has released the egg turns into the ...
- Question 19 of 20Hard
The correct statement about menstruation is ...
- Question 20 of 20Hard
In humans, spermatogenesis produces four functional sperm cells, while oogenesis produces ...