Biology Quiz

Q46. HIV infection causes
(a) Inactivation of T cells
(b) Killing of T cells
(c) Activate T cells
(d) Hyperactivation of T cells

Q47. Who is known as the Father of Ichthyology
(a) Aristotle
(b) Gunther
(c) Smith
(d) Peter Artedi

Q48. The "Lock and key" theory of enzyme action was proposed by
(a) Bernard
(b) Michaelis
(c) Von Helmont
(d) Emil Fischer

Q49. Alimentary canal runs from mouth to
(a) Stomach
(b) Small Intestine
(c) Large Intestine
(d) Anus

Q50. Which one is the longest part of the alimentary canal
(a) Oseophagus
(b) Large Intestine
(c) Small Intestine
(d) Stomach

Q51. Which of the following plants do not have Chlorophyll
(a) Cactus
(b) Orchid
(c) Cuscuta
(d) Touch me not

Q52. Stomata helps in
(A) exchange of gases
(B) exchange of lipids
(C) exchange of water
(D) exchange of proteins

Q53. Ants communicate through
(A) Pheromones
(B) Hormones
(C) Allomones
(D) Kairomones

Q54. Which of the following is male accessory reproductive glands in mammals
(A) Gastric gland
(B) Mushroom shaped gland
(C) Prostate gland
(D) Inguinal gland

Q55. Haemoglobin, haemocyanin, serum, albumin are _______ type of proteins
(A) regulatory
(B) transport
(C) storage
(D) protective

Q56. Exhibition of superiority by a hybrid over both of its parents is called
(A) Heterosis
(B) Hybridization
(C) Hypostatis
(D) Recessive

Q57. The hormone renin is produced by the
(A) Pancreas
(B) Gall Bladder
(C) Liver
(D) Kidneys

Q58. The function of cytokinin is increases
(A) Cell elongation
(B) Fruit initiation
(C) Cell division
(D) Differentiation

Q59. Clover leaf model of RNA is called
(A) tRNA
(B) sRNA
(C) mRNA
(D) rRNA

Q60. Numerical changes in chromosomes are known as
(A) Euploidy
(B) Aneuploidy
(C) Polyploidy
(D) Allopolyploidy

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