Explore topic-wise MCQs in Biology.

This section includes 275 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.

101.

The most primitive organisms are

A. Protists
B. Fungi
C. Algae
D. Bacteria
Answer» E.
102.

Smallest organism which cause disease

A. Bacteria
B. Virus
C. Mycoplasm
D. All
Answer» D. All
103.

Coralloids are found in

A. Cycus
B. Lycopodium
C. Selaginella
D. Cocus
Answer» B. Lycopodium
104.

Which of the following group of plant produce naked seed?

A. Bryophytes
B. Pteridophytes
C. Angiosperm
D. Gymnosperm
Answer» E.
105.

Lichens are indicator of

A. Air pollution
B. Water Pollution
C. Soil Pollution
D. Radiation Pollution
Answer» B. Water Pollution
106.

Which of the following is not a kharif crop?

A. Cotton
B. Groundnut
C. Maize
D. Mustard
Answer» D. Mustard
107.

Largest number of chromosome is found in

A. Man
B. Pteridophytes
C. Elephant
D. Angeiosperm
Answer» C. Elephant
108.

Microogranism are found in

A. Salted water
B. Sandy soil
C. Marshy soil
D. All above
Answer» E.
109.

Antibiotic which was discovered first

A. Teramycin
B. Neomycin
C. Pencillin
D. Streptomycine
Answer» D. Streptomycine
110.

Agar-Agar is obtained from

A. Fungi
B. Algae
C. Moss
D. Bacteria
Answer» C. Moss
111.

Which one of following contains no enzyme?

A. Bacteria
B. Virus
C. Lichen
D. Algae
Answer» C. Lichen
112.

The virus which attack the bacterial cell are called

A. Tobaco mosic virus
B. Cynophage
C. Bacteriophage
D. Mycophages
Answer» D. Mycophages
113.

The disease hydrophobia is caused due to

A. Bacteria
B. Fungi
C. Virus
D. Algae
Answer» D. Algae
114.

Louis Pasteur is famous for

A. Protein synthesis
B. Invention of microscope
C. Germ theory of diseases
D. Fermentation
Answer» D. Fermentation
115.

A bacterial cell divides once every minute and take one hour to fill a cup. How much time will it take to fill half the cup?

A. 30 Minutes
B. 60 Minutes
C. 29 Minutes
D. 59 Minutes
Answer» E.
116.

Virus is said to be

A. Living
B. Non- living
C. Transitional group between living and non-living
D. Living that cannot be multiply
Answer» D. Living that cannot be multiply
117.

TMV is related to

A. Virus
B. Evolution
C. Algae
D. Reproduction of
Answer» B. Evolution
118.

Yeast is an important source of

A. Vitamin-C
B. Vitamin-B
C. Vitamin-A
D. Vitamin-D
Answer» C. Vitamin-A
119.

Which of the following is categorized as millet

A. Wheat
B. Rice
C. Sorghum
D. Maiz
Answer» D. Maiz
120.

Medicine for epilepsy is obtain from which of the following lichen

A. Lobaria
B. Roccella
C. Parmelia
D. Evemia
Answer» D. Evemia
121.

Which of the following is used as bio-fertilizer

A. Colastridum
B. Urea
C. Azola
D. Baggase
Answer» D. Baggase
122.

Free floating see weed which covers thousands hectares in the part of North Atlantic ocean is

A. Oscillatoria
B. Ulva
C. Fucus
D. Sargassum
Answer» E.
123.

Due to bite of mad the disease hydrophobia is caused by

A. Rabies virus
B. Adeno virus
C. Polio virus
D. Influenza
Answer» B. Adeno virus
124.

Name of bacteria which cause tuberculosis

A. Mycobacterium tuberculosis
B. Vibrio cholrae
C. Bacillus coli
D. Excherichia coli
Answer» B. Vibrio cholrae
125.

Bacteria helpful in making curd from milk

A. Mycobacterium
B. Staphlio Coccus
C. Lacto bacillus
D. Yeast
Answer» D. Yeast
126.

Which is the cause of anthrax disease ?

A. Virus
B. Bacteria
C. Mycoplasm
D. Algae
Answer» C. Mycoplasm
127.

The mode of nutrition in algae is

A. Heterotrophic
B. Chemotrophic
C. Saprotrophic
D. Photo autotrophic
Answer» E.
128.

The bryophytes lack true

A. Root
B. Stem
C. Leaves
D. All of these
Answer» E.
129.

Function of Leghaemoglobin in nitrogen fixation is

A. Absorption of oxygen
B. Nutrion of bacteria
C. Absorption of light
D. All
Answer» B. Nutrion of bacteria
130.

Nitrogen fixing bacteria is useful in growing which crop

A. Wheat
B. Paddy
C. Legume
D. Maiz
Answer» D. Maiz
131.

Which of the following is a free living bacteria that help in nitrogen fixation?

A. Azotohacter
B. Anabaena
C. Azolla
D. Nostoc
Answer» B. Anabaena
132.

Nitrogen fixing becteria a found in leguminuous plant

A. Azohacter
B. Nitrobacter
C. Rizobium
D. Psendomnas
Answer» D. Psendomnas
133.

Bacteria found in root nodules of

A. Leguminous plant
B. Some of leguminous plant and some other plant
C. In all plant
D. None of these
Answer» C. In all plant
134.

Which one of the following disease caused by bacteria?

A. Tuberculosis
B. Mumps
C. Small pox
D. None of these
Answer» B. Mumps
135.

Which of the following is absent in bacteria?

A. Cell wall
B. Plasma membrane
C. Mitochondria
D. All of these
Answer» D. All of these
136.

Bacteria which are round in shape are called

A. Vibrio
B. Bacillus
C. Coccus
D. Spirilla
Answer» D. Spirilla
137.

Spores of which of the following is used as medicine

A. Lycopodium
B. Sellagenalla
C. Cytolum
D. Equistem
Answer» B. Sellagenalla
138.

Tikka disease occurs in

A. Paddy
B. Sugar Cane
C. Ground nut
D. Potato
Answer» D. Potato
139.

Streptomycin is obtained from

A. Virus
B. Bacteria
C. Algae
D. Fungi
Answer» C. Algae
140.

The term bryophytes was coined by

A. Kashyap
B. Butler
C. Braun
D. Linnaeus
Answer» D. Linnaeus
141.

Dog bite can cause rabies. Which among the following other animals can also cause rabies?

A. Donkey
B. Bat
C. House
D. Crocodile
Answer» C. House
142.

Pencillin is isolated from

A. Fungi
B. Algae
C. Virus
D. Bacteria
Answer» B. Algae
143.

Which microorganism causes hepatitis B?

A. Virus
B. Protozoa
C. Bacteria
D. None of these
Answer» B. Protozoa
144.

Which of the following is autotrophic?

A. Protozoa
B. Algae
C. Fungi
D. Virus
Answer» C. Fungi
145.

Vegetative reproduction in yeast is by

A. Budding
B. Acinate
C. Aplonospores
D. Ascospores
Answer» B. Acinate
146.

In bacteria plasmid is

A. Extra chromosomal material
B. Main DNA
C. Non functional DNA
D. Repetative gen
Answer» B. Main DNA
147.

Sargasso sea is the name of a/an

A. Fungi
B. Algae
C. Bryophytes
D. Angiosperm
Answer» C. Bryophytes
148.

Which communicable disease is caused by bacteria?

A. Small Pox
B. Mumps
C. Leprosy
D. Asthma
Answer» D. Asthma
149.

Cell wall of Algae is made up by

A. Chitine
B. Subarine
C. Celullose
D. Cutine
Answer» D. Cutine
150.

Bacteria which cause food poisoning

A. Clostridium tetani
B. Salmonella typhosa
C. Bacillius anthrisis
D. Clostridium botulinum
Answer» E.