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Online Biology Quiz

Online Biology Quiz

Online Biology Quiz

1. Consider the following statements about antigens:
1. They induce the formation of antibodies.
2. They provide immunity.
3. They are formed only within the body.
Of these statements, the correct ones are
(a) 1 and 2
(b) 2 and 3
(c) 1 and 3
(d) 1,2 and 3

2. The tooth with three roots is ?
(a) Molar
(b) Pre – molar
(d) Canine

3. In mammals, the part of the brain that has reached highest level of development and that has enabled humans to grow their own crop, invent machines ,develop language and art is
(a) Cerebrum
(b) Cerebellum
(C) Medulla oblongata
(d) None of these

4. A person will have brown eyes, blue eyes or black eyes depending upon the particular pigment present in the ?
(b) Cornea
(c) Iris
(d) Choroid

5. Reflex action in the body is controlled by
(a) sensory nerves
(b) central nervous system
(c) motor nerves
(d) sympathetic nervous system

6. What is the maximum limit of sound intensity in decibel units beyond which a. person cannot hear?
(b) 70
(c) 85
(d) 95

7. Which of the following is a membrane that protects the developing embryo from desiccation?
(a) Amnion
(b) Allantois
(c) Chorion
(d) Yolk sac

8. Which of the following combinations of chromosomes is present in males?
(a) XX
(b) XXX
(c) XY
(d) XYX

9 Biological death of a patient means death of tissues of the ?
(a) kidney
(b) heart
(c) lungs
(d) brain

10. During the development of an embryo, the formation of brain marks the beginning of organ formation. Eye in a vertebrate develops from midbrain. If after the formation of brain, the mid brain is destroyed, then what will be the resultant effect?
(a) Total failure of eye formation
(b) Development of a single eye
(c) Defective development of eyes
(d) Absence of vision in the eyes

11. The normal temperature of human body on the Kelvin scale is ?
(b) 290
(c) 300
(d) 310

12. Clotting of blood vessels is called
(b) Rheumatism
(d) Fibrosis

13. Blood group of an individual is controlled by?
(a) shape of RBC
(b) shape of WBC
(d) hemoglobin

14. Which of the following forms an irreversible
complex with hemoglobin of blood?
(a) Carbon monoxide
(b) Carbon dioxide
(c) Pure nitrogen gas
(d) A mixture of carbon dioxide and helium

15. If father has blood group A and mother has blood
group O, then which of the following blood groups may be found in their son?
(a) O
(b) B
(c) AB
(d) B,AB or O

16. If one chews an unsweetened chapati for a short time, a distinctly sweetish taste becomes notice able because
(a) carbohydrate is converted into sugar in the mouth.
(b)i protein is converted into sugar in the mouth.
(c) fat is converted into sugar in the mouth.
(d) vitamins are converted into sugar in the mouth.

17. Red Green colour blindness in man is known as
(a) Protanopia
(b) Deuteranopia
(c ) Both (a) & (b)
(d) Marfan’ s syndrome

18. A person with AB blood group is sometimes called a universal recipient because of the
(a) presence of antibodies in his blood
(b) lack of antibodies in his blood
(c) lack of antigen in his blood
(d) lack of both antigens and antibodies in his blood

19. For transfusion, the ‘O’ blood group of a donor can be accepted by a person having blood group
(a) A
(b) B
(c) AB
(d) All of these

20. Which of the following structures (glands) is concerned with the production of cortisone hormone in man?
(a) Thyroid
(b) Testis
(d) Pancreas

21. The most important function of perspiration is to
(a) lubricate the skin
(b) get rid of the body wastes
(c) regulate body temperature
(d)regulate body wastes

22. Human body needs a constant supply of proteins to survive. The first part of the digestive system to begin digesting proteins is
(a) mouth
(c)small intestine
(d) large intestine

23. In human body, the leg bones are
(a) Humerus & Femur
(b) Fibula & Tibia
(c)Fibula & Ulna
(d) Tibia & Radius

24. All the veins carry deoxygenated blood, except
(a)Hepatic vein
(b) Subclavian vein
(c)Pulmonary vein
(d) Portal vein

25. The organ in the body which accumulates iodine is
(a)Pituitary gland
(c)Thyroid gland
(d) Spleen

26. In metabolism, enzymes act as ?
(a) promoter
(b) catalyst
(c) oxidant
(d) reductant

27. Life of RBC in human blood is of
(a)30 days
(b) 60 days
(c)120 days
(d) 15 hours

28. Red blood corpuscles are formed in
(b)Small intestine
(d) Bone marrow

29. The thyroid gland is situated near which of the
following organs?
(a) Liver
(b) Spleen
(c) Larynx
(d) Kidney

30. The salivary glands secrete saliva which contains
the enzyme?
(a) pepsin
(b) renin
(c) ptyalin
(d) lipase

31. Which sugar is present in considerable amount in
the blood?
(a) Glucose
(b) Fructose
(d) Sucrose

32. The internal secretion of helps in digestion.
(a) citric acid
(b) sulphuric acid
(c) acetic acid
(d) hydrochloric acid

33, Saliva in man is ?
(a) acidic
(b) alkaline
(c) neutral
(d) None of these

34 Any foreign particle which stimulates the formation of antibodies is called ?
(b) antigen
(d) antibiotic

35. The maximum temperature the human skin can tolerate without getting blisters is?
(a) 40
(b) 60
(c) 80
(d) l00
36. How many teeth are known as milk teeth in human beings?
(a) 4
(c) 20
(d) 28

37. The proportion of red blood corpuscles and white blood corpuscles in human body is
(a) 5:l
(b) 50:1
(c) 500:l
(d) 5000:l

38. In mammals,- the sequence of bones from shoulder to finger tips is
(a) Humerus, radius-ulna, carpals, metacarpals, phalanges
(b) Humerus, metacarpals, carpals, radius-ulna, phalanges
(c) Radius- ulna, Humerus, metacarpals, carpals, phalanges
(d) Humerus, radius ulna, metacarpals, carpals, phalanges

39. If father and mother are possessing Rh +ve and Rh -ve respectively, their children will have the blood group with
(a)Rh +ve
(b) Rh -ye
(c) Rh neutral
(d) None of these

40. In which part are the carbohydrates stored as glycogen in human body?
(b) Pancreas
(d) Duodenum


1 a
2 a
3 a
4 c
5 c
6 c
7 a
8 c
9 d
10 c
11 d
12 a
13 c
14 a
15 a
16 a
17 a
18 b
19 d
20 c
21 b
22 b
23 b
24 c
25 c
26 b
27 c
28 d
29 c
30 c
31 a
32 d
33 b
34 b
35 a
36 c
37 c
38 a
39 a
40 c



23 Jul, 2019, 13:33:39 PM