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.

101.

Which type of Stem modification is seen in banana ?

A. Rhizome
B. Stem tuber
C. Corn
D. Bulb
Answer» B. Stem tuber
102.

In plant body, the water and minerals are transported by _______

A. Bast
B. Collenchyma
C. Parenchyma
D. Xylum
Answer» E.
103.

The process in which energy stored in carbohydrates is released

A. Photosynthesis
B. Respiration
C. Reproduction
D. Excretion
Answer» C. Reproduction
104.

Which one of the following vitamins is known as the anti sterile factor ?

A. Ascorbic acid
B. Riboflavin
C. Niacin
D. Retinol
Answer» C. Niacin
105.

Mycolog is the branch of botany in which we study about

A. Algae
B. Fungi
C. Bacteria
D. Virus
Answer» C. Bacteria
106.

Lathyrism is caused by excess consumption of.......

A. Khesari dal
B. Mustard oil
C. Mushrooms
D. Polished rice
Answer» B. Mustard oil
107.

In a bisexual flower if androcium and gynoecium mature at different time the phenomeon is known as _________

A. Dichogamy
B. Herpogamy
C. Haterogamy monogamy
D. None of these
Answer» B. Herpogamy
108.

Variable number of tandem repeats (VNTRs) in the DNA molecule are highly useful in

A. Recombinant dna technology
B. Monoclonal antibody production
C. Stemcell culture
D. Dna fingerprinting
Answer» E.
109.

Sleeping sickness in main is caused by the organism

A. Plasmodium
B. Entamoeba
C. Giardia
D. Trypanosoma
Answer» E.
110.

Main function of white blood corpuscles is _______

A. Transport of carbon dioxide
B. Transport of oxygen
C. To produce immune system of body
D. None of these
Answer» D. None of these
111.

Light compensation zone refers to

A. Where light is available in plenty
B. Where light is maximum
C. Beyond which light does not penetrate
D. Where all light is used
Answer» D. Where all light is used
112.

A true species in mauritius failed to reproduce because of the extinction of a fruit eating bird. Which one of the following was that bird?

A. Dove
B. Dodo
C. Condor
D. Skua
Answer» C. Condor
113.

The brain is covered by

A. Meninges
B. Skin
C. Bone
D. All the above
Answer» E.
114.

Palaeobotany is the branch of botany is which we study about

A. Animal fosills
B. Plant fossils
C. Seed of plant
D. Flower
Answer» C. Seed of plant
115.

Plants growing in sunlight are called

A. Sciophytes
B. Xerophytes
C. Heliophytes
D. Hydrophytes
Answer» D. Hydrophytes
116.

Tissue in which cells have lost the capacity of cell division

A. Mesristmatic tissue
B. Permanent tissue
C. Both a and b
D. None of these
Answer» C. Both a and b
117.

Man has _____ pairs of salivary glands

A. 3
B. 4
C. 6
D. 8
Answer» B. 4
118.

Branch of biology in which we study about cultivation of flowering plant

A. Phenology
B. Floriculture
C. Agronomy
D. Botany
Answer» C. Agronomy
119.

Who is known as father of medicine

A. Aristotle
B. Theophrastus
C. Hippocrates
D. Edward jenner
Answer» D. Edward jenner
120.

Damage to hearing is caused by sounds which exceed

A. 70 decibels
B. 80 decibels
C. 100 decibels
D. 120 decibels
Answer» E.
121.

Blood is

A. Alkaline
B. Neutral
C. Like a buffer
D. Acidic
Answer» B. Neutral
122.

In case of a heart attack, a hormone is injected as an emergency measure, Which one is it?

A. Thyroxine
B. Adrenaline
C. Heparin
D. Insulin
Answer» C. Heparin
123.

The biogenetic law was proposed by

A. Alfred russel wallace
B. Charles darwin
C. Ernst von haeckel
D. Lamarck
Answer» D. Lamarck
124.

There are approximately how many muscles in Human body ?

A. 206
B. 310
C. 554
D. 700
Answer» E.
125.

In exo-biology we study about ________

A. External structure of living beings
B. Life present on the earth
C. Life present in the other layer of earth atmosphere
D. Life found in space and on other satellite
Answer» E.
126.

Lamarck's theory of inheritance of acquired characters was challenged by

A. August weismann
B. Hugo de vries
C. Herbert spencer
D. Carl linnaeus
Answer» D. Carl linnaeus
127.

The energy released by 1 gram of glucose is

A. 6 kcal
B. 4 kcal
C. 5 kcal
D. 3kcal
Answer» C. 5 kcal
128.

Which of the following is the largest phyllum in the animal kingdom in respect of number of species

A. Annalida
B. Platyhelminthes
C. Chordata
D. Arthropoda
Answer» E.
129.

The rate of heartbeat is accelerated by the harmone

A. Adrenaline
B. Acetylcholine
C. Thyroxine
D. Pituitrin
Answer» B. Acetylcholine
130.

Oath taken by medical graduates is given by

A. Aristotle
B. Theophrastus
C. Hippocrates
D. Darwin
Answer» D. Darwin
131.

The outer membrane that covers the brain is

A. Myelin sheath
B. Dura mater
C. Arachnoid membrane
D. Pia mater
Answer» C. Arachnoid membrane
132.

Monocarpic plants are those that produce fruits ...............during the life of the plant

A. Once
B. Thrice
C. Many times
D. Twice
Answer» B. Thrice
133.

Tikka disease is related with the crop:

A. Musturd
B. Paddy
C. Ground nut
D. All of these
Answer» D. All of these
134.

The leaves used as wrappers for bides are obtained from which one of the following ?

A. Shikakai
B. Rudraksha
C. Tendu
D. Lemon grass
Answer» D. Lemon grass
135.

Dicotyledonous weeds are destroyed by a chemical called

A. Indole - acetic acid
B. 2- 4 dichlorophenoxy acetic acid
C. Abscisic acid
D. Naphthalene acetic acid
Answer» C. Abscisic acid
136.

The grouping of blood is based on substances called

A. Antibodies
B. Antigens
C. Antitoxin
D. Enzymes
Answer» C. Antitoxin
137.

Yellow color of urine is due to presence of

A. Bile juice
B. Urochrome
C. Lymph
D. Cholesterol
Answer» C. Lymph
138.

Name the blood cells in which nucleus is absent

A. Lymphocytes
B. Blood platelets
C. Monocytes
D. Eosinophils
Answer» C. Monocytes
139.

Branch of agriculture concerned with the production of crops

A. Agrotology
B. Agronomy
C. Agrostology
D. Anthropology
Answer» C. Agrostology
140.

The sex of a newborn baby is determined by the chromosome inherited from

A. The father
B. The mother
C. The father's father
D. Both a & b
Answer» B. The mother
141.

The phenomenon of summer sleep by animals is called

A. Hibernation
B. Aestivation
C. Laziness
D. Lethargy
Answer» C. Laziness
142.

Function of Leghaemoglobin in nitrogen fixation _____

A. Absorption of oxygen
B. Nutrion of bacteria
C. Absorption of light
D. All
Answer» B. Nutrion of bacteria
143.

Cutaneous respiration occurs in

A. Cockroach
B. Salamander
C. Crab
D. Parrot
Answer» C. Crab
144.

Botany is also known as

A. Phytology
B. Phycology
C. Pedology
D. Plantophyta
Answer» B. Phycology
145.

Silviculture is the branch of botany in which we study about

A. Culture of algae
B. Development of forest
C. Culture of fungi
D. Silciphida plant
Answer» C. Culture of fungi
146.

The total number of pairs of Peripheral nerves in man are

A. 41
B. 42
C. 43
D. 44
Answer» D. 44
147.

Unlike Mitosis, Meiosis results in the formation of

A. 2n daughter cells
B. Haploid cells
C. Body cells
D. Diploid cells
Answer» C. Body cells
148.

The basic unit of the nervous system is the

A. Lymphs
B. Nephrons
C. Nerves
D. Neurons
Answer» E.
149.

Agrostology is the study of

A. Seed of oil
B. Crop
C. Grass
D. Fruits
Answer» D. Fruits
150.

Spermology is the study of

A. Seed
B. Leaf
C. Fruit
D. Pollen grain
Answer» B. Leaf