Explore topic-wise MCQs in Biology.

This section includes 344 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.

1.

At high altitude RBC of human blood will

A. Increase in number
B. Decrease in number
C. Decrease in size
D. Increase in size
Answer» B. Decrease in number
2.

Blood group which have no antibodies

A. A
B. B
C. AB
D. O
Answer» D. O
3.

Blood group which have both antibodies

A. A
B. B
C. AB
D. O
Answer» E.
4.

Blood pressure of man during running

A. Increases
B. Decreases
C. Remains same
D. Increase and decreases both
Answer» B. Decreases
5.

Blood vessel bringing blood into Bowman's capsule is

A. Afferent arteriole
B. Efferent arteriole
C. Renal vein
D. Renal portal vein
Answer» B. Efferent arteriole
6.

Larges part of human brain is

A. Cerebellum
B. Cerebrum
C. Olfactory labbe
D. Mid brain
Answer» C. Olfactory labbe
7.

pH value of human blood is

A. 8.1
B. 8.4
C. 7.4
D. 9.2
Answer» D. 9.2
8.

Rh factor is related with

A. Bear
B. Monkey
C. Man
D. Cat
Answer» C. Man
9.

Cerebrum is located in part of brain in/on/at

A. Lower side
B. Extension of brain
C. Fore front
D. None of these
Answer» D. None of these
10.

In human body lymphocytes are formed in

A. Liver
B. Bone row
C. Pancreas
D. Spleen
Answer» C. Pancreas
11.

Percentage of water found in blood plasma of human

A. 60% to 64%
B. 70 to 75%
C. 80 to 82%
D. 91 to 92%
Answer» E.
12.

Artificial kidney work on the principle of

A. Osmosis
B. Diffusion
C. Dialysis
D. Active transport
Answer» D. Active transport
13.

Purification of blood takes place in

A. Lung
B. Heart
C. Kidney
D. Liver
Answer» B. Heart
14.

When a forgein body inter into blood circulatory system the reaction is started by

A. RBC
B. WBC
C. Platletes
D. Cytoplasm
Answer» C. Platletes
15.

By complete oxidation of glucose number of ATP molecule formed is

A. 2
B. 28
C. 38
D. 48
Answer» D. 48
16.

Number of which type of WBC is greatest in blood of numan

A. Eosinophils
B. Basiophils
C. Lymphocytes
D. Neutrophils
Answer» E.
17.

At the time of inspiration the diaphragm

A. Expand
B. Contract
C. Relaxed
D. Does not under any change
Answer» C. Relaxed
18.

Artificial purification of blood is called

A. Dialysis
B. Hemolysis
C. Osmosis
D. Pyralysis
Answer» B. Hemolysis
19.

Pace maker is related with

A. Kidney
B. Brain
C. Lung
D. Heart
Answer» E.
20.

Antibodies is produced in the plasma of blood by

A. Monocytes
B. Lymphocytes
C. Eosinophils
D. Neutrophils
Answer» C. Eosinophils
21.

Clothing of blood involves

A. Drying due to evaporation of plasma
B. Denaturation of albumins by thrombin
C. Hemolysis of RBC
D. Change of fibrinogen into fibrin by thrombin
Answer» E.
22.

Antigen is a substance which

A. Lowers body temperatures
B. Destroys harmful becteria
C. Triggers the immune system
D. Is used as an antidote to poison
Answer» D. Is used as an antidote to poison
23.

Anaemia is due to deficiency of

A. Ca
B. Fe
C. Mg
D. P
Answer» C. Mg
24.

If CO2 concentration in the blood increases, the breathing will

A. Increase
B. Decrease
C. Stop
D. No effect
Answer» B. Decrease
25.

Sweating is important

A. For improvement of normal health
B. To open the pore of skin
C. To control the temperature of body
D. To excret the smell of body,
Answer» D. To excret the smell of body,
26.

Female reproductive harmons is

A. Estrogen
B. Progestron
C. Relaxin
D. All of these
Answer» E.
27.

How many bones are there in the human creanium?

A. 6
B. 8
C. 10
D. 12
E. 1
Answer» C. 10
28.

The longest cells of human body

A. White blood corpuuscles
B. Red blood cells
C. Neuron cell
D. None of these
Answer» D. None of these
29.

Production of which one of the following is a function of liver?

A. Lipase
B. Urea
C. Mucus
D. Hydrochloric acid
Answer» C. Mucus
30.

Meteal present in Haemoglobin

A. Copper
B. Iron
C. Magnese
D. Zinc
Answer» C. Magnese
31.

The major chemical compound found in human kidney stones is

A. Urea
B. Calcium carponate
C. Calcium oxalate
D. Calcium sulphate
Answer» D. Calcium sulphate
32.

Rh factor is discovered by

A. Landsteiner
B. Weiner
C. Landsteiner and Weiner
D. Leuen hook
Answer» D. Leuen hook
33.

Blood pressure is the pressure exerted on the wall of

A. Heart
B. Vein
C. Artery
D. Cell
Answer» D. Cell
34.

Fertilization in human takes place inside

A. Uterus
B. Oviduct
C. Ovigland
D. None of these
Answer» C. Ovigland
35.

Which of the following chemical can be used anticoagulent?

A. Sodium chloride
B. Sodium citrate
C. Sodium nitrate
D. Ammonium chloride
Answer» C. Sodium nitrate
36.

Corbon monoxide has greater affinity for haemoglobin as compared to oxygen

A. 1000 times
B. 200 times
C. 20 times
D. 2 times
Answer» C. 20 times
37.

Red blood corpuscles is produced into

A. Spleen
B. Kidney
C. Liver
D. Bone marro
Answer» E.
38.

Blood leaving lung, is rich in

A. Oxygen
B. Carbondioxide
C. Haemoglobin
D. Number of RBC
Answer» B. Carbondioxide
39.

Pepsin is a

A. Harmone
B. Enzyme
C. Vitamin
D. Mineral
Answer» C. Vitamin
40.

In a healthy person rate of heart beat on one minute is

A. 58 times
B. 67 times
C. 72 times
D. 90 times
Answer» D. 90 times
41.

Function of pace maker is

A. To regulate the formation of urine
B. To regulate the process of digestion
C. To initiate heart beat
D. To start the process of respiration
Answer» D. To start the process of respiration
42.

Appetite and satiety centres of brain are present in

A. Cerebral hemispheres
B. Hypothalmus
C. Cerebellum
D. Meduller ablangata
Answer» C. Cerebellum
43.

Myxoedema is disorder produed due to hypersecretion of

A. Liver
B. Adrenal
C. Thyroid
D. Pancrease
Answer» D. Pancrease
44.

Longest artery found in the body of human

A. Venacava
B. Arota
C. Capillaries
D. Ventricle
Answer» C. Capillaries
45.

Which one of following is not a endocrine gland?

A. Adrenal
B. Pituitary
C. Thyroid
D. Liver
Answer» E.
46.

Which part of human brain is most highly developed as compared to others?

A. Medulla
B. Cerebellum
C. Cerebrum
D. Optic lobes
Answer» D. Optic lobes
47.

Bone found in leg of man is

A. Porus
B. Hollow
C. Soild
D. None of these
Answer» C. Soild
48.

In the human body which sturcture is the appendix attached to

A. Large intestine
B. The small intestine
C. the gall bladder
D. The stomach
Answer» B. The small intestine
49.

Digestion of protein is started from

A. liver
B. Stomach
C. Small intestine
D. Large intestine
Answer» C. Small intestine
50.

Which of the following is not the part of digestive system ?

A. Liver
B. Gall bladder
C. Cornea
D. Intestine
Answer» D. Intestine