Explore topic-wise MCQs in Biology.

This section includes 5751 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.

301.

Leukemia is a disease of the-

A. Pancreas
B. Blood
C. Liver
D. Kidney
Answer» C. Liver
302.

Which part of eye becomes inflamed and pink when dust gets into it ?

A. Cornea
B. Choroids
C. Conjunctiva
D. Sclerotic
Answer» D. Sclerotic
303.

Study of internal structure of organism is called :

A. Anatomy
B. Agrology
C. Agrostology
D. Agronomy
Answer» B. Agrology
304.

Rickets is caused by deficiency of

A. Vitamin d
B. Vitamin c
C. Vitamin a
D. Vitamin k
Answer» C. Vitamin a
305.

Who invented Polio Vaccine

A. Luvenhauk - leeuwenhock
B. Harrison and sympson
C. Karl landsteiner
D. Johan e. salk
Answer» E.
306.

Healing of wounds is hastened by vitamin ?

A. Vitamin a
B. Vitamin b1
C. Vitamin b2
D. Vitamin c
Answer» E.
307.

Wood used in making cricking cricket bats is got from-

A. Tectona grandis
B. Salix alba / salbix purpurea
C. Morus alba / morus nigra
D. Cedrus deodara
Answer» C. Morus alba / morus nigra
308.

Study of factors connected with the improvement of human race ?

A. Euthenics
B. Eugenics
C. Evolution
D. Embryology
Answer» C. Evolution
309.

Largest leaves occur in-

A. Raflesia
B. Victoria
C. Banana
D. Nicotiana
Answer» C. Banana
310.

Which part of the human body coordinates the functions of various organs ?

A. Brain
B. Kidney
C. Liver
D. Heart
Answer» B. Kidney
311.

Which among the following blood protein regulates the amount of water in plasma ?

A. Globulin
B. Fibulin
C. Fibrin
D. Albumin
Answer» E.
312.

RNA means-

A. Ribonucleic acid
B. Ribonucleus acid
C. Ribonucleus alkaline
D. Ribonucleus alum
Answer» B. Ribonucleus acid
313.

Algae is

A. Filamentous
B. Colonial
C. Unicellular
D. All of these
Answer» E.
314.

The poison of honey bee is

A. Protein
B. Saltish
C. Acidic
D. Alkaline
Answer» D. Alkaline
315.

Bronchitis is a disease of

A. Respiratory tract
B. Liver
C. Bladder
D. Blood
Answer» B. Liver
316.

Which is not a part of blood ?

A. Placenta
B. Rbc
C. Wbc
D. Plasma
Answer» B. Rbc
317.

What is the name of largest fruit ?

A. Lodoicea
B. Wolfia
C. Eucalyptus
D. Orchid
Answer» B. Wolfia
318.

Who invented Vitamin -

A. F.g. hopkins
B. Mc. collum
C. Holst
D. Ronald ross
Answer» B. Mc. collum
319.

Branch of science which used in test of breast cancer ?

A. Mammography
B. Morphology
C. Mycology
D. Microbiology
Answer» D. Microbiology
320.

The quantity of human blood is what percent of total weight ?

A. 5%
B. 7%
C. 10%
D. 4%
Answer» C. 10%
321.

The most abundant constituent of atmospheric air is ?

A. Hydrogen
B. Nitrogen
C. Oxygen
D. Carbon dioxide
Answer» C. Oxygen
322.

Plants growing on sand are known as

A. Psammophytes
B. Oxylophytes
C. Chasmophytes
D. Lithophytes
Answer» B. Oxylophytes
323.

Eggs is not a source of -

A. Vitamin c
B. Fats
C. Protein
D. Vitamin d
Answer» B. Fats
324.

Quinine is extracted from the bark of :

A. Eucalyptus
B. Cadar
C. Neem
D. Cinchona
Answer» E.
325.

Pigmentation of skin is due to :

A. Melanocytes
B. Leucocytes
C. Lymphocytes
D. Monocytes
Answer» B. Leucocytes
326.

Who invented Insulin

A. Stenach
B. Banting
C. Christian bernard
D. Edwards and stepto
Answer» C. Christian bernard
327.

Venom of cobra attacks on -

A. Circulatory system
B. Digestive system
C. Respiratory system
D. Nervous system
Answer» B. Digestive system
328.

Which among the following hormone can be used as a drug to treat cardiac arrest ?

A. Insulin
B. Epinphrine
C. Thyroxin
D. Calcitonin
Answer» C. Thyroxin
329.

Study of fossils is called

A. Pomology
B. Phycology
C. Psychiatry
D. Paleontology
Answer» E.
330.

The blood pressure of normal human is

A. 110 / 80
B. 120 / 80
C. 110 / 90
D. 120 / 90
Answer» C. 110 / 90
331.

DNA is-

A. Double nucleic acid
B. Deoxyribo nucleic acid
C. Deoxyribo nucleic alum
D. Deoxy nucleic acid
Answer» C. Deoxyribo nucleic alum
332.

Scurvy is caused by deficiency of

A. Vitamin c
B. Vitamin d
C. Vitamin a
D. Vitamin b
Answer» B. Vitamin d
333.

Plants developing in dry conditions are ?

A. Mesophytes
B. Lithophytes
C. Xerophytes
D. Hydrophytes
Answer» D. Hydrophytes
334.

Which among following is not a biotic component ?

A. Decomposers
B. Composers
C. Consumer
D. Producer
Answer» C. Consumer
335.

Largest gland of Human body-

A. Liver
B. Heart
C. Kidneys
D. None of these
Answer» B. Heart
336.

Milk fever in cow is caused due to the deficiency of

A. Protein
B. Calcium
C. Nitrogen
D. Phosphorus
Answer» C. Nitrogen
337.

Rubber is obtained from

A. Latex
B. Gun
C. Resin
D. Cell sap
Answer» B. Gun
338.

What is scientific name of man ?

A. Homo spaiens
B. Rana tigrina
C. Felis domestica
D. Canis familaris
Answer» B. Rana tigrina
339.

Beri-Beri is caused by the lack of vitamin

A. Vitamin a
B. Vitamin c
C. Vitamin b1
D. Vitamin k
Answer» D. Vitamin k
340.

What is pH value of human blood ?

A. 7.4
B. 7.0
C. 7.8
D. 7.2
Answer» B. 7.0
341.

On an average how many litres of blood a human body have ?

A. 2-3 litre
B. 12-14 litre
C. 8-10 litre
D. 5-6 litre
Answer» E.
342.

Plants synthesise protein from

A. Sugar
B. Fatty acid
C. Starch
D. Amino acid
Answer» E.
343.

Influenza is caused by

A. Bacteria
B. Fungus
C. Virus
D. None of these
Answer» D. None of these
344.

Study of pulse and arterial pressure is called

A. Sonography
B. Sphygmology
C. Saurology
D. Rhinology
Answer» C. Saurology
345.

What provides instant energy ?

A. Sugar
B. Fat
C. Protein
D. Carbohydrates
Answer» E.
346.

Myopia is connected with ?

A. Legs
B. Ear
C. Nose
D. Eyes
Answer» E.
347.

Which is not an example of fungi ?

A. Albugo
B. Mushroom
C. Pulp
D. Mucor
Answer» D. Mucor
348.

One day you wake with a sore throat and a runny nose. Your doctor takes a swab from your throat, sends it to a lab, and telephones you the next day to say that antibiotic will not help you get better.

A. Having waited a day, it is too late to take an antibiotic
B. You need an antiseptic, not an antibiotic
C. You need to be vaccinated instead of taking an antibiotic
D. You are infected by a virus
Answer» E.
349.

Non-clotting of blood is caused by deficiency of

A. Vitamin k
B. Vitamin c
C. Vitamin a
D. Vitamin b
Answer» B. Vitamin c
350.

Herbicides are used to control ?

A. Weeds
B. Nematodes
C. Insects
D. Fungi
Answer» B. Nematodes