This set of Human Physiology Multiple Choice Questions & Answers (MCQs) focuses on “Human Reproductive System”.
1. Division of human egg is __________
a) Holoblastic and unequal
c) Holoblastic and equal
Explanation: Division of human egg is Holoblastic and unequal. Holoblastic cleavage is seen in the eggs containing moderate to sparse amount of yolk. Holoblastic cleavage is the complete division of an isolecithal or microlecithal egg into blastomeres.
2. The lytic enzyme released y sperm is _________
Explanation: The lytic enzyme released y sperm is Hyaluronidase. It catalyzes the degradation of hyaluronic acid.
3. Number of autosomes in human primary spermatocyte is _________
Explanation: An autosome is a chromosome that is not a sex chromosome. The DNA in autosomes is collectively known as atDNA or auDNA.
4. Ovum receives the sperm in the region of _________
a) Animal pole
c) Vegetal pole
d) Pigmented area
Explanation: An embryo is divided into two hemispheres: the animal ole and vegetal pole within a blastula. The animal pole consists of small cells that divide rapidly in contrast with the vegetal pole below it. Ovum receives the sperm in the region of Vegetal pole.
5. Which of the following organ is devoid of gland?
Explanation: Oviduct is a simple ciliated tube, lined with tissues. It is devoid of a gland.
6. In the absence of acrosome the sperm _________
a) Cannot penetrate the egg
b) Cannot get energy
c) Cannot get food
d) Cannot swim
Explanation: Acrosome contains digestive enzymes. These enzymes break the outer membrane of an ovum. In the absence of acrosome the sperm cannot penetrate the egg.
7. Among the following stem cells which are found in the umbilical cord?
a) Embryonic stem cells
b) Adult stem cells
c) Cord blood stem cells
d) Blood stem cells
Explanation: Cord blood cells are the blood left over in the placenta and in the umbilical cord after the birth of the baby. The cord blood is composed of RBCs, WBCs, plasma, platelets and is also rich in hematopoietic stem cells.
8. Human sperm moves with the help of _________
c) Basal body
Explanation: Human sperm is haploid. Human sperm moves with the help of Flagellum. It is found in the tail region of the sperm.
9. Cryptorchidism is a condition in which _________
a) Male hormones are not reactive
b) Ovaries are removed
c) Sperms are not formed
d) Testes fail to descend in scrotal sacs
Explanation: Cryptorchidism is also known as undescended testicle. It is a condition in which the testicles haven’t moved into the bag of skin below the penis before birth.
10. Bidder’s canal is meant for the passage of _________
Explanation: Bidder’s canal is a spherical, brownish organ. It is present in the kidney. Bidder’s canal is meant for the passage of Sperms. It is found in frogs.
11. Spermatogonia are formed by _________
d) Meiosis II
Explanation: Mitosis is a type of cell division that results in two daughter cells each having same number and kind of chromosome as in parent nucleus. Spermatogonia are formed by Mitosis.
12. Wolffian duct forms _________
d) Ejaculatory duct
Explanation: Wolffian duct is the mesonephric embryonic duct that leads to the development of male gonads. Wolffian duct develops into Epididymis.
13. Type of placenta found in human is called _________
Explanation: Placenta found in human is called Discoidal. It is a placenta in which the chorionic villi are arranged in a circular plate.
14. Acrosome is made up of _________
d) Golgi bodies
Explanation: Acrosome is made up of Golgi bodies. It contains digestive enzymes. It is present in sperm.
15. All the mammals are viviparous.
Explanation: Viviparity refers to the development of the embryo inside the body and eventually leading to the live birth. All the mammals are not viviparous and some lay eggs.
Sanfoundry Global Education & Learning Series – Human Anatomy and Physiology.
To practice all areas of Human Anatomy and Physiology, here is complete set of 1000+ Multiple Choice Questions and Answers.