1.
A major male sex organ that produces and stores sperm.
Correct Answer
B. Testicle
Explanation
The testicle is a major male sex organ responsible for producing and storing sperm. It is an essential part of the male reproductive system and plays a crucial role in fertility. The testicles also produce testosterone, the primary male sex hormone.
2.
Which of the following structures is NOT involved in the production or transport of sperm?
Correct Answer
D. Ureter
Explanation
The male reproductive system is responsible for the production and transport of sperm. The epididymis stores mature sperm, the vas deferens carries sperm to the urethra, and the urethra expels semen. The ureter, however, is part of the urinary system, transporting urine from the kidneys to the bladder.
3.
A set of coiled tubes that connect to the vas deferens.
Correct Answer
B. Epididymis
Explanation
The epididymis is a set of coiled tubes that connect to the vas deferens. It is located in the testicles and serves as a storage and maturation site for sperm. Sperm produced in the testes enter the epididymis, where they gain the ability to swim and fertilize an egg. From the epididymis, sperm travel through the vas deferens and eventually reach the urethra for ejaculation. Therefore, the epididymis is the correct answer in this context.
4.
A muscular tube that transports sperm-filled semen.
Correct Answer
C. Vas deferens
Explanation
The vas deferens is a muscular tube that transports sperm-filled semen. It is a part of the male reproductive system and connects the epididymis to the urethra. During ejaculation, the vas deferens contracts to propel sperm from the testes towards the urethra, where it combines with other fluids to form semen.
5.
The tiny male cell that unites with the female ovum to form a fertilized egg or zygote.
Correct Answer
A. Sperm
Explanation
The correct answer is "sperm" because it is the tiny male cell that combines with the female ovum during fertilization to form a zygote. Sperm is produced in the testes and stored in the scrotum. Semen, on the other hand, is a mixture of sperm and other fluids that is ejaculated from the penis during sexual intercourse.
6.
A fluid that contains millions of sperm.
Correct Answer
C. Semen
Explanation
Semen is the correct answer because it is a fluid that contains millions of sperm. It is the reproductive fluid that is ejaculated by males during sexual intercourse and contains sperm cells that are capable of fertilizing an egg. The other options, amniotic, urine, and blood, do not contain sperm and are not directly related to reproduction.
7.
The sac that holds the testes.
Correct Answer
A. Scrotum
Explanation
The scrotum is a sac-like structure that holds the testes. It is located outside the body, hanging between the legs. The scrotum helps to regulate the temperature of the testes, keeping them slightly cooler than the rest of the body, which is essential for sperm production. It also protects the testes from external injuries. The other options listed (placenta, vas deferens, testis) are not correct because they do not specifically refer to the sac that holds the testes.
8.
A process in which sperm-laden semen leaves the male body.
Correct Answer
C. Ejaculation
Explanation
Ejaculation is the process in which sperm-laden semen leaves the male body. This occurs during sexual arousal and orgasm. It is a crucial step in the reproductive process as it allows sperm to be released into the female reproductive system for fertilization to occur. Ovulation refers to the release of an egg from the ovary, gestation refers to the period of pregnancy, and urination is the process of expelling waste fluids from the body.
9.
These are responsible for carrying sperm-filled semen from the male to the female's vagina.
Correct Answer
A. Penis and urethra
Explanation
The correct answer is penis and urethra. The penis is the male reproductive organ that delivers sperm into the female's vagina during sexual intercourse. The urethra is a tube that runs through the penis and carries both urine and semen out of the body. Together, the penis and urethra play a crucial role in the transportation of sperm-filled semen from the male to the female's vagina.
10.
A gland that makes some of the parts of semen.
Correct Answer
C. Prostate
Explanation
The prostate gland is responsible for producing some of the components of semen. It is a small gland located below the bladder and in front of the rectum in males. The prostate gland produces a fluid that helps nourish and protect the sperm as they travel through the reproductive system. This fluid, along with sperm from the testicles and fluids from other glands, makes up semen. The other options listed, such as the ovary, scrotum, and bulbourethral gland, are not involved in the production of semen.