81. What fraction of Body’s calcium is stored in Bones and teeth?

(A) 85%
(B) 90%
(C) 94%
(D) 99%

82. Which among the following is NOT a true bast fiber?

(A) Jute
(B) Hemp
(C) Flax
(D) Cotton

83. The metals in which among the following groups are required in maximum quantities in a living organism?

(A) Potassium, Manganese, Molybdenum, Calcium
(B) Potassium, Molybdenum, Copper, Calcium
(C) Pottassium,Sodium, Magnesium, Calcium
(D) Sodium, Magnesium, Copper, Manganese

84. Which among the following helps to determine the character of a cell?

(A) Nucleus
(B) Chromosomes
(C) Genes
(D) Plasma

85. What name has been given to the fear of crossing roads?

(A) Arthrophobia
(B) Atychiphobia
(C) Aichmophobia
(D) Agyrophobia