31. A connective tissue cord extending between the testis and the abdominal wall is known as?
[A] mesenteric cord
[B] gubernaculum
[C] testis cord
[D] spermatic cord
Show Answer
Correct Answer: D [spermatic cord]
Notes:
A connective tissue cord extending between the testis and the abdominal wall is known as the spermatic cord.
32. The type of placenta found in humans is called __.
[A] Discoidal
[B] Cotyledonary
[C] Zonary
[D] Diffuse
Show Answer
Correct Answer: A [Discoidal]
Notes:
Placenta found in humans is called discoidal. It is a placenta in which the chorionic villi are arranged in a circular plate.
33. The corpus luteum is the source of secretion of:
[A] LH
[B] Estradiol
[C] Estrogen
[D] Progesterone
Show Answer
Correct Answer: D [Progesterone]
Notes:
The corpus luteum is the source of secretion of Progesterone. Progesterone is a hormone released by the ovaries.
34. What causes black quarter in cattle?
[A] Euphorbia tirucalli
[B] Clostridium chauvoei
[C] Bacillus anthracis
[D] None of these
Show Answer
Correct Answer: B [Clostridium chauvoei]
Notes:
Clostridium chauvoei causes black quarter in cattle. It is an acute and highly fatal disease.
35. Which of the following is VAM?
[A] Bioinsecticide
[B] Bioherbicide
[C] Endomycorrhiza
[D] Ectomycorrhiza
Show Answer
Correct Answer: C [Endomycorrhiza]
Notes:
VAM is Vesicular Arbuscular Mycorrhizal. It is formed by the symbiotic association between certain phycomycetous fungi and angiosperm roots.
36. Intestinal bacteria synthesizes which of the following in the human body?
[A] Vitamin D
[B] Vitamin K
[C] Proteins
[D] Fats
Show Answer
Correct Answer: B [Vitamin K]
Notes:
Vitamin K is synthesized by bacteria in the intestinal tract of man and most animals in quantities sufficient to meet their needs. Besides, intestinal bacteria may also synthesize Vitamin B such as Thiamine (B1), Riboflavin (B2), Niacin (B3), Pantothenic Acid (B5), Pyroxidine (B6), and Biotin (B7), Folic Acid (B9) and Cobalamin (B12).
37. Which one of the following is not a true fish?
[A] Jellyfish
[B] Starfish
[C] Cuttlefish
[D] All of the above
Show Answer
Correct Answer: D [All of the above ]
Notes:
The term fish is most strictly used to describe any animal with a backbone that has gills throughout life and has limbs, if any, in the shape of fins. Many types of aquatic animals commonly referred to as fish are not fish in this strict sense; examples include shellfish, cuttlefish, starfish, crayfish and jellyfish.
38. Stethoscope works on which principle?
[A] Reflection of sound
[B] Reflection of light
[C] Conversion of current into sound
[D] Conversion of sound into current
Show Answer
Correct Answer: A [Reflection of sound]
Notes:
The stethoscope is an acoustic medical device listening to the internal sounds of an animal or human body. It typically has a small disc-shaped resonator that is placed against the chest, and two tubes connected to earpieces. Working of a stethoscope is based on reflection of sound. In a stethoscope, the sound of the patient’s heartbeat reaches the doctor’s ear by multiple reflections of sound.
39. Which of the following multiplies very slowly in comparison to others?
[A] Bacteria
[B] Fungi
[C] Virus
[D] Worms
Show Answer
Correct Answer: D [Worms]
Notes:
Viruses, bacteria and fungi multiply very quickly, while worms multiply very slowly in comparison. Taxonomically, all bacteria are closely related to each other than to viruses and vice versa.
40. Barr body is found in ____:
[A] Female somatic cells
[B] Male somatic cells
[C] Sertoli cells
[D] Sperm
Show Answer
Correct Answer: A [Female somatic cells]
Notes:
A Barr body is the inactive X chromosome in a female somatic cell in those species in which sex is determined by the presence of the Y or W chromosome rather than the diploidy of the X or Z. A typical human female has only one Barr body per somatic cell, while a typical human male has none.
