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190+ Biology Solved MCQs

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These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: General Knowledge (GK) , Union Public Service Commission (UPSC) , Indian Administrative Service (IAS) , Staff Selection Commission (SSC) .

Chapters

Chapter: Biology
101.

What is the average life of Red Blood cells in our body?

A. 30-40 days
B. 70-80 days
C. 100-120 days
D. 160-180 days
Answer» C. 100-120 days
102.

Which of the following plant growth hormone was recognized by Japanese scientists?

A. Auxin
B. Gibberellins
C. Abscisic acid
D. Cytokinin
Answer» B. Gibberellins
103.

Which among the following does not fall in the category of morbid fear or Phobia?

A. Claustrophobia
B. Photophobia
C. Algophobia
D. Anthophobia
Answer» B. Photophobia
104.

Which among the following is the correct location of pyloric sphincter in human body?

A. between Oral cavity and esophagus
B. between Esophagus and Stomach
C. between Stomach and duodenum
D. between duodenum and Jejunum
Answer» C. between Stomach and duodenum
105.

Consider the following statements:
Both Cochlea and Vestibular system are parts of Internal ear
Only Cochlea makes the auditory system of human body
None of the malleus, incus, and stapes are found in the internal ear.
Which among the above statements are correct ?

A. 1 & 2
B. 2 & 3
C. 1 & 3
D. all 1,2 & 3
Answer» C. 1 & 3
106.

Consider the following statements:
1. Oxygen as well as most Carbon dioxide are transported by Red Blood cells
2. Iron is required for transportation of Oxygen as well as Carbon Dioxide
3. Both Oxygen and Carbon Dioxide bind with Hemoglobin
Which among the above statements are correct ?

A. 1 & 2
B. 2 & 3
C. 1 & 3
D. 3 only
Answer» D. 3 only
107.

In which of the following, the cellular power plants – Mitochondria are absent ?

A. Red algae
B. Green Algae
C. Bacteria
D. Brown Algae
Answer» C. Bacteria
108.

Which among the following is essential gene material ?

A. Protein
B. Fat
C. DNA
D. RNA
Answer» C. DNA
109.

Which among the following is the smallest Human Chromosome?

A. Chromosome 10
B. Chromosome 16
C. Chromosome 20
D. Chromosome 21
Answer» D. Chromosome 21
110.

Consider the following statements:
1. Most antigens are Proteins or lipids
2. Lipids work as antigens if they combine with Proteins or polysaccharides
3. Most vaccines contain antigens.
Which among the above statements are correct?

A. 1 only
B. 1 & 2 only
C. 2 & 3 only
D. all 1, 2 and 3
Answer» C. 2 & 3 only
111.

Which among the following group represents the most commonly found cancers in the world?

A. Carcinoma
B. Sarcoma
C. Lymphoma
D. Germ cell tumor
Answer» A. Carcinoma
112.

Anesthesia which allows patients to undergo surgery without the distress and pain they would otherwise experience, has been practiced by man since ancient times. Which among the following plant is the most ancient source of anesthesia preparations?

A. Opium (poppy)
B. Cannabis
C. Datura
D. Coca
Answer» A. Opium (poppy)
113.

It has been demonstrated by the scientists that, certain wines such as Red Wine posses health benefits because they contain antioxidants, which work in the body as Free Radical Scavengers and slow the oxidation of other molecules by capturing the free radicals. Which among the following is the most common antioxidant found in Red Wine?

A. Catechin
B. Tetrodotoxin
C. Polyphenol
D. Tocopherol
Answer» C. Polyphenol
114.

Biologists have been able to demonstrate the hearing and sound sensory mechanism through the acoustico-lateralis system in which of the following vertebrates ?

A. amphibians
B. snakes
C. fishes
D. Birds
Answer» C. fishes
115.

The Red color of Red wine is mainly because of _____?

A. Chemicals in Wine
B. Pigments
C. Color blended
D. Ageing
Answer» B. Pigments
116.

What is RuBisCO?

A. A Sugar
B. An Enzyme
C. A Fat
D. A Carbohydrate
Answer» B. An Enzyme
117.

Which of the following part of the body stores Vitamin A, Vitamin D as well as Vitamin B12?

A. Brain
B. Liver
C. Pancreas
D. Red Blood Cells
Answer» B. Liver
118.

Which of the following organ in human body produces albumin, one of the major components of blood serum?

A. Bone Marrow
B. Liver
C. Pancreas
D. Spleen
Answer» B. Liver
119.

Which among the following is the only internal human organ which can regenerate?

A. Pancreas
B. Kidney
C. Liver
D. Spleen
Answer» C. Liver
120.

Horses can also digest cellulose from grasses because _______?

A. They are ruminants and have two stomachs
B. They have a long alimentary Canal
C. They have hind gut
D. They don‘t digest cellulose
Answer» C. They have hind gut
121.

Jamnapari is a breed of which of the following?

A. Goat
B. Sheep
C. Horse
D. Cow
Answer» A. Goat
122.

Due to which of the processes in plants the Radiocarbon dating is possible to estimate their age?

A. Growth
B. Chemosynthesis
C. Photosynthesis
D. Assimilation
Answer» C. Photosynthesis
123.

Which among the following vitamins is involved in the breakdown of energy molecules such as glucose?

A. Vitamin A
B. Vitamin B
C. Vitamin C
D. Vitamin D
Answer» B. Vitamin B
124.

Which among the following correctly refers to Ischemia?

A. restriction in blood supply due to factors in the blood vessels
B. Abrupt fall in the blood Pressure
C. necrosis in a blood vessel due to a local lack of oxygen
D. condition of severely deficient supply of oxygen to the body
Answer» A. restriction in blood supply due to factors in the blood vessels
125.

What is the correct name of premature death of cells and living tissue?

A. Neutrophilia
B. Necrosis
C. Neoplasia
D. Nephrosis
Answer» B. Necrosis
126.

Which of the following groups of plants is known as Magnoliophyta?

A. Gymnosperms
B. Angiosperms
C. Algae
D. Bryophyte
Answer» B. Angiosperms
127.

Which among the following is a correct definition of Hematocrit?

A. proportion of blood volume that is occupied by red blood cells
B. proportion of blood volume that is occupied by white blood cells
C. proportion of blood volume that is occupied by Leucocytes and Thromobocytes
D. proportion of blood volume that is occupied by plasma
Answer» A. proportion of blood volume that is occupied by red blood cells
128.

Which among the following is the correct definition of Oxygen toxicity?

A. A condition resulting from the harmful effects of breathing oxygen at high pressures
B. A condition resulting from the contamination of oxygen with Carbon Monoxide
C. A condition in which the body as a whole or a tissue is deprived of adequate oxygen supply
D. A condition in which due to water pollution, the aquatic animals in water bodies get died
Answer» A. A condition resulting from the harmful effects of breathing oxygen at high pressures
129.

Which among the following is true attribute to Polar bear?

A. Herbivore
B. Omnivore
C. Carnivore
D. Marsupial
Answer» C. Carnivore
130.

In which year India was certified as being free of variola (small pox virus) due to Indian national smallpox eradication programme (NSEP) and its intensified version (INSEP)?

A. 1975
B. 1977
C. 1980
D. 1985
Answer» B. 1977
131.

With which of the following animals Galton‘s whistle is most commonly associated?

A. Horses
B. Dogs
C. whales
D. Shark
Answer» B. Dogs
132.

Causing agent of which of the following disease produces Integrase enzyme?

A. Malaria
B. Small Pox
C. Swine flu
D. AIDS
Answer» D. AIDS
133.

Apart from the temporal bone, which among the following is considered as strongest bone in human body?

A. Humerus
B. Fibula
C. Femur
D. Tibia
Answer» C. Femur
134.

world‘s first cloned Buffalo was born in which country?

A. India
B. China
C. USA
D. Russia
Answer» A. India
135.

Global Fund to Fight AIDS, Tuberculosis and Malaria commonly called ―The Global Fund‖ or ―GFATM‖ was established In which year ?

A. 1999
B. 2000
C. 2002
D. 2004
Answer» C. 2002
136.

Non-vascular embryophytes are also known as following?

A. Pteridophytes
B. Algae
C. Bryophytes
D. Gymnosperms
Answer» C. Bryophytes
137.

How many arteries are present in Human Umbilical Cord?

A. 1
B. 2
C. 3
D. 4
Answer» B. 2
138.

Lacrimal apparatus, Lacrimal artery, Lacrimal bone, Lacrimal ducts, Lacrimal fossa, Lacrimal fluid & Lacrimal gland are parts of which organ of the body?

A. Ear
B. Nose
C. Eye
D. Throat
Answer» C. Eye
139.

Rafflesia is the plant with largest flowers and found in many parts of the South East Asia. It is a ______?

A. Mangrove Plant
B. Ornamental Plant
C. Parasitic Plant
D. Carnivorous Plant
Answer» C. Parasitic Plant
140.

Who among the following is called father of Modern Genetics?

A. William Bateson
B. Robert Hooke
C. E J Butler
D. F O Bower
Answer» A. William Bateson
141.

Which among the following is correct about biocenosis?

A. The study of energy transformations in the living systems
B. Community of organisms occupying an area
C. Study of the parts of an ecosystem with specific species
D. A kind of abnormality related to organism living in a particular habitat
Answer» B. Community of organisms occupying an area
142.

Apart from sugarcane (most commonly Saccharum officinarum) which among the following plants is widely known in the world as a commercial source of table sugar ?

A. Toona cilata
B. Gloriosa superba
C. Asparagus pulmosus
D. Beta vulgaris
Answer» D. Beta vulgaris
143.

For purity of which of the following commodity is expressed in ICUMSA numbers?

A. Refined Edible Oil
B. Refined Edible Sugar
C. Refined Vegetable Oil
D. Milk
Answer» B. Refined Edible Sugar
144.

From which part, Coconut coir is obtained?

A. Epicarp
B. Mesocarp
C. Endocarp
D. Seed
Answer» B. Mesocarp
145.

Which of the following plants have respiratory roots?

A. Marshy Plants
B. Mangroves
C. Epiphytes
D. Submerged Hydrophytes
Answer» B. Mangroves
146.

From which part of the plant Glycyrrhiza glabra , Liquorice or Mulethi is obtained?

A. Leaves
B. Roots
C. Fruits
D. Stem
Answer» B. Roots
147.

Which among the following plants is known as Indian ginseng?

A. Withania somnifera
B. Datura ceratocaula
C. Iberis amara
D. Capsella bursa pastoris
Answer» A. Withania somnifera
148.

Which part of the plant Raphanus sativus is edible?

A. Fruit
B. Leaves
C. Roots
D. All the above
Answer» D. All the above
149.

Who among the following coined the term Bacterium?

A. Antonie van Leeuwenhoek
B. Christian Gottfried Ehrenberg
C. Louis Pasteur
D. Robert Koch
Answer» B. Christian Gottfried Ehrenberg
150.

Which among the following is a correct definition of Saprophytes?

A. A parasitic plant that can complete its life cycle independent of a host
B. A heterotrophic plant that feeds upon other living plants
C. A heterotrophic plant that feeds upon dead organic matter
D. A plant that is unable to synthesize a particular organic compound
Answer» C. A heterotrophic plant that feeds upon dead organic matter

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