31. The sternum is a very important bone that protects the __
[A] Brain
[B] Heart
[C] Lungs
[D] Liver
Show Answer
Correct Answer: B [Heart]
Notes:
The sternum is a very important bone that protects the Heart. It also serves as the connection point for the coastal cartilage.
32. What are the examples of circadian rhythms in humans?
[A] the sleep-wake cycle
[B] the body-temperature cycle
[C] the cycles in which a number of hormones are secreted
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
The sleep-wake cycle, the body–temperature cycle, and the cycle in which many hormones are secreted are examples of circadian rhythms in humans.
33. What is the function of glucagon?
[A] Affects RBC production
[B] Increases heart rate
[C] Lowers blood sugar levels
[D] Raises blood sugar levels
Show Answer
Correct Answer: D [Raises blood sugar levels]
Notes:
Raises blood sugar levels is the function of glucagon.
34. Which of the following microorganism causes a bacterial disease in a poultry farm?
[A] Ascaridia galli
[B] Mycobacterium avium
[C] Eimeria
[D] Paramyxovirus
Show Answer
Correct Answer: B [Mycobacterium avium]
Notes:
Mycobacterium avium microorganism causes a bacterial disease in a poultry farm.
35. 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.
36. Which of the following forestry materials can be used as biomass?
[A] Logging residues
[B] Tallow
[C] Fish oil
[D] Manure
Show Answer
Correct Answer: A [Logging residues]
Notes:
The forestry material used as biomass is accumulating residues. Tallow, fish oil, and manure belong to animal products used as biomass.
37. Which of the following is a tapeworm?
[A] Enterobius
[B] Fasciola
[C] Taenia
[D] Schistosoma
Show Answer
Correct Answer: C [Taenia]
Notes:
Taenia is a genus of tapeworm that includes some important parasites of livestock. Members of the genus are responsible for taeniasis and cysticercosis in humans. There are more than 100 species recorded. They are morphologically characterized by a ribbon-like body composed of a series of segments called proglottids with proximal mouth called scolex.
38. In Angiosperms, plant embryos in seed have structures called ____:
[A] Buds
[B] Spore
[C] Sprout
[D] Cotyledon
Show Answer
Correct Answer: D [Cotyledon]
Notes:
The word angiosperm means seed. The seeds develop inside an organ which is modified to become a fruit. These are also called flowering plants. Plant embryos in seeds have structures called cotyledons. Cotyledons are called ‘seed leaves’ because in many instances they emerge and become green when the seed germinates.
39. The part of the stem where a leaf arises is known as ___:
[A] Carpel
[B] Bud
[C] Node
[D] Tuber
Show Answer
Correct Answer: C [Node]
Notes:
The leaves arise in the regions of the plant known as the plant nodes and are therefore the point of attachment of the leaves. The region of the plant between two nodes is known as the internode. The angle between the upper surface of the leaf and the stem from which it arises is known as the axil.
40. 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.