31. In which of the following are gills hidden?
[A] Cryptobranchidae
[B] Ambystomatida
[C] Amphiumidae
[D] Plethodontidae
Show Answer
Correct Answer: A [Cryptobranchidae]
Notes:
In Cryptobranchidae gills are hidden. Hellbenders belong to the Cryptobranchidae family. They contain the largest living salamanders.
32. What are the characteristics of Caecilian?
[A] eyes may be covered by skin or even bone
[B] tropical amphibians
[C] they have no arms or legs
[D] all of the above
Show Answer
Correct Answer: D [all of the above]
Notes:
Caecilian is tropical amphibians, That look like big insects or clever snakes in appearance. Their eyes may be covered by skin or even bone and they have no arms or legs.
33. Which of the following is merrythought bone in birds?
[A] Coracoid
[B] Clavicle
[C] Scapula
[D] Suprascapula
Show Answer
Correct Answer: B [Clavicle]
Notes:
The clavicle is called merrythought bone. The clavicle accompanies the coracoid, it serves to tighten the wing and is the proximal attachment of the pectoralis muscle.
34. Consider the following:
- Birds
- Mammals
- Reptilia
The double circulatory heart is present in which of the above?
[A] Only 1 and 2
[B] Only 2 and 3
[C] Only 1 and 3
[D] All of the above
Show Answer
Correct Answer: A [Only 1 and 2]
Notes:
A double circulatory system is present in birds and mammals where the blood passes through the heart twice for each complete circuit of the body. In reptiles, amphibians, and fishes, a single circulatory system is present where the blood passes through the heart once in each complete circuit of the body.
35. Where is heparin derived from?
[A] intestines of pigs
[B] intestines of goats
[C] intestines of cows
[D] intestines of dogs
Show Answer
Correct Answer: A [intestines of pigs]
Notes:
Heparin comes from the intestines of pigs that are slaughtered for meat. Heparin is an important anticoagulant.
36. What is the classification of epithelial tissue based on?
[A] function
[B] type of matrix
[C] structural modification
[D] nonvoluntary or voluntary action
Show Answer
Correct Answer: C [structural modification]
Notes:
The classification of epithelial tissue based on the structural modification. The main functions of epithelial tissue are protection, secretion, absorption, and sensation.
37. Which of the following diseases is not caused by the RNA virus?
[A] Yellow fever
[B] Smallpox
[C] Mumps
[D] German measles
Show Answer
Correct Answer: B [Smallpox]
Notes:
Yellow fever, Mumps, and German measles are caused by the RNA virus. Whereas Smallpox is caused by the DNA virus.
38. In which form does Plasmodium enter the human body?
[A] Phanerozoites
[B] Cryptozoites
[C] Gametocytes
[D] Sporozoites
Show Answer
Correct Answer: D [Sporozoites]
Notes:
In Sporozoites form of Plasmodium enter the human body through the bite of infected female Anopheles mosquitoes.
39. The term biomass most often refers to which of the following?
[A] Inorganic matter
[B] Organic matter
[C] Chemicals
[D] Ammonium compounds
Show Answer
Correct Answer: B [Organic matter]
Notes:
The term biomass most often refers to Organic matter. Organic material is that was alive and is now in or on the soil.
40. Which one of the following endocrine gland is situated in the neck?
[A] Pituitary
[B] Thyroid
[C] Pancreas
[D] Adrenals
Show Answer
Correct Answer: B [Thyroid]
Notes:
The thyroid gland is one of the largest endocrine glands in the human body which is found in the neck. It controls how quickly the body uses energy, makes proteins, and controls how sensitive the body is to other hormones.
