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
Answer: (a) Inactivation of T cells
Q47. Who is known as the Father of Ichthyology
(a) Aristotle
(b) Gunther
(c) Smith
(d) Peter Artedi
Answer: (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
Answer: (d) Emil Fischer
Q49. Alimentary canal runs from mouth to
(a) Stomach
(b) Small Intestine
(c) Large Intestine
(d) Anus
Answer: (d) Anus
Q50. Which one is the longest part of the alimentary canal
(a) Oseophagus
(b) Large Intestine
(c) Small Intestine
(d) Stomach
Answer: (c) Small Intestine
Q51. Which of the following plants do not have Chlorophyll
(a) Cactus
(b) Orchid
(c) Cuscuta
(d) Touch me not
Answer: (c) Cuscuta
Q52. Stomata helps in
(A) exchange of gases
(B) exchange of lipids
(C) exchange of water
(D) exchange of proteins
Answer: (A) exchange of gases
Q53. Ants communicate through
(A) Pheromones
(B) Hormones
(C) Allomones
(D) Kairomones
Answer: (A) Pheromones
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
Answer: (C) Prostate gland
Q55. Haemoglobin, haemocyanin, serum, albumin are _______ type of proteins
(A) regulatory
(B) transport
(C) storage
(D) protective
Answer: (B) transport
Q56. Exhibition of superiority by a hybrid over both of its parents is called
(A) Heterosis
(B) Hybridization
(C) Hypostatis
(D) Recessive
Answer: (A) Heterosis
Q57. The hormone renin is produced by the
(A) Pancreas
(B) Gall Bladder
(C) Liver
(D) Kidneys
Answer: (D) Kidneys
Q58. The function of cytokinin is increases
(A) Cell elongation
(B) Fruit initiation
(C) Cell division
(D) Differentiation
Answer: (C) Cell division
Q59. Clover leaf model of RNA is called
(A) tRNA
(B) sRNA
(C) mRNA
(D) rRNA
Answer: (A) tRNA
Q60. Numerical changes in chromosomes are known as
(A) Euploidy
(B) Aneuploidy
(C) Polyploidy
(D) Allopolyploidy
Answer: (C) Polyploidy
Practice Test Exam