31. What results in severe, acute, or incurable liver disease?
[A] Blood clotting
[B] Production of blood proteins
[C] Elimination of water, drugs, and toxins from the body
[D] All of the above
Show Answer
Correct Answer: D [ All of the above]
Notes:
Blood clotting, Production of blood proteins, and Elimination of water, drugs, and toxins from the body are results in severe, acute, or incurable liver disease.
32. Into how many structural regions is the oviduct divided?
[A] Two
[B] Three
[C] Four
[D] None of these
Show Answer
Correct Answer: B [Three]
Notes:
Into three structural regions is the oviduct divided: ampulla, isthmus, and infundibulum
33. Which of the following diseases can be transmitted to humans during milking?
[A] foot and mouth disease
[B] smallpox
[C] Ranikhet
[D] Cowpox
Show Answer
Correct Answer: D [Cowpox]
Notes:
Cowpox diseases can be transmitted to humans during milking. Cowpox is an infectious disease caused by the cowpox virus.
34. Uric acid is the chief nitrogenous wastes in ____:
[A] Frogs
[B] Birds
[C] Fishes
[D] Mankind
Show Answer
Correct Answer: B [Birds]
Notes:
Land snails, insects, birds, and some reptiles excrete uric acid as the major nitrogenous waste. The white, crystalline substance seen in a typical bird or lizard “poop” is actually urine: a little pool of uric acid crystals in a very small amount of water.
35. Commonest mammal is ____:
[A] Elephant
[B] Lion
[C] Human
[D] Panther
Show Answer
Correct Answer: C [Human]
Notes:
Humans are likely the most numerous species of mammal on Earth at the moment.
36. With regard to kidneys and its functions, which of the following statements is not correct?
[A] Each nephron has two parts – the glomerulus and the renal tubule
[B] They maintain water balance and expel metabolic waste
[C] Their basic functional units are called nephrons
[D] Reptiles have relatively more nephrons than birds
Show Answer
Correct Answer: D [Reptiles have relatively more nephrons than birds]
Notes:
The kidneys perform many crucial functions, including: maintaining overall fluid balance. regulating and filtering minerals from blood. filtering waste materials from food, medications, and toxic substances. The renal corpuscle of each kidney nephron has two parts – they are the Glomerulus, which is a network of small blood vessels called capillaries, and the Bowman’s Capsule (also known as the Glomerular Capsule), which is the double-walled epithelial cup within which the glomerulus is contained. A nephron is the basic structural and functional unit of the kidney. They are the microscopic structure composed of a renal corpuscle and a renal tubule. The word nephron is derived from the Greek word – nephros, meaning kidney. There are about millions of nephrons in each human kidney.
37. Lungs of a plant are
____:
[A] Roots
[B] Flowers
[C] Stems
[D] Leaves
Show Answer
Correct Answer: D [Leaves]
Notes:
Leaves are the lungs of plants. Much like the lungs of animals, leaves are the place of a plant’s respiration. It is from leaves that oxygen is emitted during the light hours of the day and carbonic acid gas diffuse in during day and released out at night through stomata.
38. Which bacterial strain developed from natural isolates by genetic manipulations can be used for treating oil spills?
[A] Clostridium
[B] Agrobacterium
[C] Pseudomonas
[D] Nitrosomonas
Show Answer
Correct Answer: D [Nitrosomonas]
Notes:
Nitrosomonas is a genus comprising rod shaped chemoautotrophic bacteria. These rare bacteria oxidize ammonia into nitrite as a metabolic process. Nitrosomonas are useful in treatment of industrial and sewage waste and in the process of bioremediation.
39. Which among the following carries impure blood to human heart?
[A] Pulmonary arteries
[B] Pulmonary vein
[C] Vena Cava
[D] Aorta
Show Answer
Correct Answer: A [Pulmonary arteries]
Notes:
A pulmonary artery is an artery in the pulmonary circulation that carries deoxygenated blood from the right side of the heart to the lungs. The pulmonary arteries are unique in that unlike most arteries which carry oxygenated blood to other parts of the body, the pulmonary arteries carry de-oxygenated blood to the lungs. After picking up oxygen, the oxygen rich blood is returned to the heart via the pulmonary veins.
40. An invertebrate does not have _____:
[A] Notochord
[B] Body cavity
[C] Haemocoel
[D] Gills
Show Answer
Correct Answer: A [Notochord]
Notes:
All verteberates have notochord, body cavity and gills in their embryonic stage or adult stage but not have haemocoel. It’s presence is well marked in the members of phylum in Arthopoda.
