31. What is the appearance of the most advanced character in a crocodile?
[A] Powerful jaws
[B] Shelled eggs
[C] Thecodont dentition
[D] Four chambered heart
Show Answer
Correct Answer: D [Four chambered heart]
Notes:
The four-chambered heart is the most advanced character in a crocodile which makes them different from other reptiles. The four-chambered heart is characteristic of the mammalian class. The presence of this type of heart makes crocodiles similar to mammals.
32. The dorsal portion of the shell of turtles is the __
[A] palate
[B] carapace
[C] fangs
[D] None of these
Show Answer
Correct Answer: B [carapace ]
Notes:
The dorsal portion of the shell of turtles is the carapace. This is a protective cover over the cephalothorax.
33. Which one has a poison gland?
[A] Male platypus
[B] Scoliodon
[C] Rat snake
[D] Wall lizard
Show Answer
Correct Answer: A [Male platypus]
Notes:
The male platypus has a spur on the inner side of each ankle that is connected to a poison gland located on top of the thighbone.
34. To which one of the following categories does the adipose tissue belong?
[A] Connective
[B] Epithelial
[C] Neural
[D] Muscular
Show Answer
Correct Answer: A [Connective]
Notes:
Adipose tissue is a type of loose connective tissue that belongs to the class of connective tissue.
35. Which of the following are also called natural killer cells?
[A] Monocytes
[B] Thrombocytes
[C] Lymphocytes
[D] Neutrophils
Show Answer
Correct Answer: C [Lymphocytes]
Notes:
Lymphocytes are also called natural killer cells and play a vital role in producing antibodies. Lymphocytes are of two types – B lymphocytes and T lymphocytes.
36. Which hormone regulates adrenocorticotropin release in the pituitary gland?
[A] Thyrotropin releasing hormone
[B] Corticotropin releasing hormone
[C] Gonadotropin releasing hormone
[D]
Thyroid-stimulating hormone
Show Answer
Correct Answer: B [Corticotropin releasing hormone]
Notes:
The corticotropin-releasing hormone regulates adrenocorticotropin release in the pituitary gland.
37. Chickenpox is a highly contagious disease caused by the __
[A] Pasteurella pestis
[B] Bacillus anthracis
[C] Bordetella pertussis
[D] Varicella zoster
Show Answer
Correct Answer: D [Varicella zoster ]
Notes:
Chickenpox is a highly contagious disease caused by the varicella zoster virus.
38. Listeriosis is a serious infection caused by __
[A] Listeria pestis
[B] Listeria monocytogenes
[C] Listeria papillomavirus
[D] None of these
Show Answer
Correct Answer: B [Listeria monocytogenes]
Notes:
Listeriosis is a serious infection caused by Listeria monocytogenes. It is caused by eating food contaminated with the bacterium Listeria monocytogenes.
39. The pathogen causing Amoebiasis is transmitted through__.
[A] By touch
[B] Insect bite
[C] Food or water contaminated with cysts
[D] Droplet Infection
Show Answer
Correct Answer: C [Food or water contaminated with cysts]
Notes:
The pathogen causing Amoebiasis is transmitted through food or water contaminated with cysts.
40. Who proposed the modern synthetic theory of organic evolution?
[A] R.A. Fisher
[B] T. Dobzhansky
[C] Julian Huxley
[D] Ernst Mayr
Show Answer
Correct Answer: C [Julian Huxley]
Notes:
Julian Huxley proposed the modern synthetic theory of organic evolution.
