MCQs is one of the best ways to test a student’s comprehension of a concept. Academic Task subject experts have prepared these Biology MCQs based on current trends and practices. Furthermore, the questions present in this section will be beneficial for competitive examinations and tests (PPSC Test, FPSC Test, SPSC Test, KPPSC Test, BPSC Test, Etea Test) as well. The content is updated regularly, with the addition of new topics, more questions, and useful links. The given Biology MCQs section covers all topic like Basic Biology MCQs for Entry Test, MCQ on Cell Signaling, MCQ on Mollusca, MCQ on Mollusca, MCQ on Respiratory System, MCQ on Nutrition in Plants, MCQ on Vitamins, MCQ on Plant Tissue Culture, MCQ on Bioinformatics, MCQ on Food Microbiology, MCQ on Food Microbiology, Human Health and Disease, Genetics, etc.

101.  The pH value of blood is normally between _____ and _____.
(A) 6.0, 6.5
(B) 7.0, 7.35
(C) 7.35, 7.45
(D) 7.45, 7.98

102. Severe deficiency of Vitamin-D results in
(A) scurvy
(B) rickets
(C) night blindness
(D) osteomalacia

103. People living in high altitudes (like mountains) usually have a
(A) smaller number of Red Blood Cells
(B) larger number of Red Blood Cells
(C) smaller number of White Blood Cells
(D) larger number of White Blood Cells

104. The average adult has a blood volume of about ________ liters.
(A) 5
(B) 5.5
(C) 6
(D) 6.5

105. The average internal temperature of human body is
(A) 35 °C
(B) 36 °C
(C) 37 °C
(D) 38 °C

106. Vitamin ________ is needed for the formation of a light-sensitive pigment in the retina.
(A) A
(B) C
(C) D
(D) B complex

107.About ________ of the body weight of a mammal is water.
(A) 60%
(B) 65%
(C) 70%
(D) 75%

108. On wound ________ fight foreign particles, like bacteria.
(A) White Blood cells
(B) Red Blood Cells
(C) Platelets
(D) Plasma

109. Blood is carried towards the heart by
(A) Arteries
(B) Capillaries
(C) Veins
(D) none of these

110. ________ is essential for the formation of hemoglobin.
(A) Calcium
(B) Iron
(C) Water
(D) Carbohydrates