31. What is the shape of the stomach?
[A] J – shaped
[B] S – shaped
[C] O – shaped
[D] None of these
Show Answer
Correct Answer: A [J – shaped]
Notes:
The stomach is a J-shaped organ and is present on the left side of the abdomen.
32. What cannot sperm do in the absence of acrosome?
[A] Cannot penetrate the egg
[B] Cannot get energy
[C] Cannot get food
[D] Cannot swim
Show Answer
Correct Answer: A [Cannot penetrate the egg]
Notes:
The acrosome contains digestive enzymes. Digestive enzymes break down the outer membrane of the ovum. In the absence of acrosome, sperm cannot enter the egg.
33. The male accessory glands generate fluid that nourishes the sperm called __
[A] semen
[B] seminal plasma
[C] spermatogonia
[D] testosterone
Show Answer
Correct Answer: B [seminal plasma]
Notes:
The male accessory glands generate fluid that nourishes the sperm called seminal plasma and is rich in fructose, calcium, and certain enzymes.
34. A condition in which one or both of the testes fail to descend from the abdomen into the scrotum called __
[A] Vasectomy
[B] Phimosis
[C] Cryptorchidism
[D] None of these
Show Answer
Correct Answer: C [Cryptorchidism]
Notes:
A condition in which one or both of the testes fail to descend from the abdomen into the scrotum is called Cryptorchidism.
35. Chromosome designation of Turner sydrome is ____:
[A] 44A+XO
[B] 44A+XXX
[C] 44A+XXY
[D] 44A+XYY
Show Answer
Correct Answer: A [44A+XO]
Notes:
Turner syndrome is a rare chromosomal disorder characterized by partial or complete loss (monosomy) of one of the X chromosomes that affects females. Individuals with Turner syndrome have only 45 chromosomes, including just a single X chromosome. This monosomic has a chromosome complement of 44 autosomes and one X chromosome (44+XO). The abnormal condition probably originates from exceptional egg or sperm with no X chromosome.
36. Jellyfish are an example of which type of phylum?
[A] Phylum -Protozoa
[B] Phylum -Porifera
[C] Phylum – Cnidaria
[D] Phylum -Ctenophora
Show Answer
Correct Answer: C [Phylum – Cnidaria]
Notes:
Cnidarian, also called coelenterate, any member of the phylum Cnidaria (Coelenterata), a group made up of more than 9,000 living species. ? Mostly marine animals, the cnidarians include the corals, hydras, jellyfish, Portuguese men-of-war, sea anemones, sea pens, sea whips, and sea fans.
37. The wing of a bat and the wing of a bird are the examples of ____ limbs:
[A] Heterogeneous
[B] Homogenous
[C] Homologous
[D] Analogous
Show Answer
Correct Answer: D [Analogous]
Notes:
The wings of insects, bats and birds, that evolved independently in each lineage separately after diverging from an ancestor without wings, are examples of analogous organs. Analogous organs are the opposite of homologous organs, which have similar functions but different origins.
38. What is the transplantation of graft between genetically identical individuals?
[A] Autograft
[B] Xenograft
[C] Iso-graft
[D] Allograft
Show Answer
Correct Answer: C [Iso-graft]
Notes:
An isogenic graft or Isograft is a graft between genetically identical individuals (i.e. monozygotic twins). This type of graft donot pose any form of tissue rejection threat by recipient’s body.
39. Water flows of f the wings of birds and insects due- to the presence of ____:
[A] Proteins
[B] Waxes
[C] Minerals
[D] Sugars
Show Answer
Correct Answer: B [Waxes]
Notes:
Insects and birds have the simplest surface waxes that serve to water proof feathers. The interlocking feather barbs and a special waxy coating create a shield that water runs off of. Besides, while a few components present in surface lipids can prevent growth of pathogens, the total surface with waxed layer certainly functions to prevent microbial entry into the organism.
40. The average life span of red blood corpuscles is about ____:
[A] 100 – 120 days
[B] 100 – 200 days
[C] 160 – 180 days
[D] 150 – 200 days
Show Answer
Correct Answer: A [100 – 120 days]
Notes:
The red blood cells develop in the bone marrow and circulate for about 100–120 days in the body before their components are recycled by macrophages in liver and spleen (Grave yard of RBC). The old, worn out and dead RBC are destroyed mainly in an organ called spleen.
