31. Mastitis refers to which of the following?
[A] Inflammation of nephrons
[B] Inflammation of neurons
[C] Inflammation of Udders
[D] Inflammation of mast cells
Show Answer
Correct Answer: C [Inflammation of Udders]
Notes:
Mastitis refers to Inflammation of Udders. It is most often caused by infection with the Corynebacterium pyogenes bacterium in dry cows and pre-weaned heifers. Antibiotic treatment provides cure.
32. Which of the following are bacterial diseases in Humans?
[A] Pulmonary Tuberculosis
[B] Cholera
[C] Leprosy
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
Pulmonary Tuberculosis, Cholera, and Leprosy are bacterial diseases in Humans.
33. Which of the following does not affect health?
[A] Genetic disorders
[B] Infections
[C] LifeStyle
[D] Health Insurance
Show Answer
Correct Answer: D [Health Insurance]
Notes:
Genetic disorders, Infections, and LifeStyle always affect health. Whereas Health Insurance is a type of insurance that covers medical expenses caused by an illness.
34. Membrane lipids of chillsensitive plants contain ____:
[A] Low proportion of saturated fatty acids
[B] Equal proportion of saturated and unsaturated fatty acids
[C] Low proportion of unsaturated fatty acids
[D] High proportion of unsaturated fatty acids
Show Answer
Correct Answer: D [High proportion of unsaturated fatty acids]
Notes:
The membranes of chill sensitive plants have about a 2 :1 ratio of unsaturated to saturated fatty acids. It has been seen that the proportion of unsaturated membrane fatty acids increases and the critical temperature decreases so that chill-sensitive plants are more acclimitized to low temperatures.
35. The development of a fruit without fertilization is called ____:
[A] Apomixis
[B] Parthenocarpy
[C] Hybridogenesis
[D] Gametogamy
Show Answer
Correct Answer: B [Parthenocarpy]
Notes:
Parthenocarpy is the development of fruit without fertilization of seeds. In nature, parthenocarpy occurs as a mutation. Another biological mechanism stenospermacarpy also produces seedless fruits, but here the seeds are aborted while they are still small. In nature, parthenocarpy occurs as a mutation. Some plants require pollination or stimulation for parthenocarpy. This is known as stimulative parthenocarpy.
36. Gastric juice has a pH of about ____:
[A] 1.5 to 3.5
[B] 5 to 6
[C] 6 to 8
[D] 8.5 to 9.5
Show Answer
Correct Answer: A [1.5 to 3.5]
Notes:
Gastric acid, also known as gastric juice or stomach acid, is a digestive fluid, formed in the stomach. It is composed of hydrochloric acid (HCl), potassium chloride (KCl) and sodium chloride (NaCl). It is strongly acidic with pH varying from 1.5 to 3.5. the acid plays a key role in digestion of proteins.
37. Animals with Chitinous exoskeleton are ____:
[A] Sea-Urchin
[B] Insects
[C] Sponges
[D] Snails
Show Answer
Correct Answer: B [Insects]
Notes:
Chitin is the main component of the cell walls of fungi, the exoskeletons of arthropods such as crustaceans (e.g., crabs, lobsters and shrimps) and insects, the radulas of molluscs, and the beaks and internal shells of cephalopods, including squid and octopuses. Combined with calcium carbonate, as in the shells of Crustacean and molluscs, chitin produces a much stronger composite for protection.
38. The type of tail found in Shark is ____:
[A] Heterocercal
[B] Homocercal
[C] Protocercal
[D] Diphycercal
Show Answer
Correct Answer: A [Heterocercal]
Notes:
Sharks possess a heterocercal caudal fin in which the dorsal portion is usually noticeably larger than the ventral portion. This is because the shark’s vertebral column extends into the dorsal portion, providing a greater surface area for muscle attachment.
39. Blood fails to clot white flowing in the blood vessel because of the presence of ____:
[A] Heparin
[B] Prothrombin
[C] Haemoglobin
[D] Hirudin
Show Answer
Correct Answer: A [Heparin]
Notes:
Heparin also known as un-fractionated heparin, a highly sulphated glycosaminoglycan, is widely used as an injectable anticoagulant, and has the highest negative charge density of any known biological molecule.
40. Where does the cabbage store food?
[A] Leaves
[B] Root
[C] Stem
[D] Fruit
Show Answer
Correct Answer: A [Leaves]
Notes:
Cabbages have no need to store food as they are seasonal plants and die after about 4 to 6 months. They do however produce food in the leaves of the plants and would utilize short-term storage (in the leaves) for simple metabolic processes.
