Explore topic-wise MCQs in Biology.

This section includes 79 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.

51.

Tertian malaria can be

A. benign only
B. malignant only
C. deadly
D. benign and malignant
Answer» E.
52.

Gut is also called as

A. tubular gut
B. small intestine
C. alimentary canal
D. buccal cavity
Answer» D. buccal cavity
53.

Protein coat of virus is called as

A. capsule
B. cell coat
C. capsid
D. DNA
Answer» D. DNA
54.

Virus synthesizes its own self and then transfer itself by using biosynthetic machinery of

A. own
B. bacteria
C. host
D. cell
Answer» D. cell
55.

A system for naming any classifying all organisms was given by

A. Edward Jenner
B. Carlous Linnaeus
C. Robert brown
D. M.john
Answer» C. Robert brown
56.

Disease of vascular lesions in epithelial layers of ectodermal tissues are formed in mouth or skin is known as

A. Herpes simplex
B. Influenza
C. Polio
D. Mumps
Answer» B. Influenza
57.

Mosquito egg remain afloat due to

A. water vapors around them
B. air floats around them
C. air sacs around them
D. higher density of it compared to water
Answer» C. air sacs around them
58.

Base plate of a bacteriophage is attached to tail fibers which are in number

A. 4
B. 6
C. 8
D. 9
Answer» C. 8
59.

There is no genetically engineered vaccine available for

A. HCV
B. HBV
C. HAV
D. HEV
Answer» B. HBV
60.

Carbohydrate and protein, when combined, form

A. amino acids
B. fiber
C. mucus
D. nucleic acids
Answer» D. nucleic acids
61.

Damage, diseases and death may be caused by the

A. symbiotic relationship
B. parasitic relationship
C. saprophytic relationship
D. neutral relationship
Answer» C. saprophytic relationship
62.

Euglena and Amoeba belongs to kingdom

A. protoctista
B. protozoa
C. monera
D. plantae
Answer» B. protozoa
63.

Inside mosquitoes, plasmodium reproduces

A. sexually
B. asexually
C. unisexually
D. bisexually
Answer» D. bisexually
64.

In respiratory system, the dust particles are trapped due to

A. nucleic acids
B. nectar
C. amino acids
D. mucus
Answer» E.
65.

Tongue helps to select suitable foods through

A. salivary gland
B. taste glands
C. taste buds
D. false palate
Answer» D. false palate
66.

Gut extending from mouth to anus is called as

A. tubular gut
B. pharynx
C. alimentary gut
D. large intestine
Answer» B. pharynx
67.

Mosquito larvae and pupae can be exterminated through small fish like

A. guppies
B. gold fish
C. Tubifex worms
D. seahorse
Answer» B. gold fish
68.

Malarial preventive drugs include

A. quinine
B. chloroquine
C. Paludrine
D. Penicillin
Answer» D. Penicillin
69.

Hepatitis B is also known as

A. HCV
B. HAV
C. serum hepatitis
D. HIV
Answer» D. HIV
70.

AIDS virus penetrates into host's

A. red blood cells
B. platelets
C. brain cells
D. leukocytes
Answer» E.
71.

Adenovirus is responsible for disease

A. cough
B. cold
C. flu
D. measles
Answer» C. flu
72.

Retroviruses can convert a single stranded RNA genome into double stranded viral DNA by special enzyme

A. Transcriptase
B. Reverse transcriptase
C. Auto Transcriptase
D. Catalase
Answer» C. Auto Transcriptase
73.

If an organism of one trophic level is a parasite, the pyramid number gets

A. higher
B. inverted
C. lower
D. infected
Answer» C. lower
74.

Kingdom Animalia includes

A. unicellular organisms
B. multicellular organisms
C. micro-organisms
D. invertebrates
Answer» C. micro-organisms
75.

Virus depend on other plants and animals for its synthesis, that?s why it is called as

A. obligatory intracellular parasite
B. obligatory extracellular parasite
C. obligatory parasite
D. intracellular parasite
Answer» B. obligatory extracellular parasite
76.

Number of capsid in a virus of common cold is

A. 252
B. 535
C. 250
D. 525
Answer» B. 535
77.

Viruses which infect bacteria are called

A. microphages
B. bacteriophages
C. autophages
D. Congo virus
Answer» C. autophages
78.

T-lymphocytes results in failure of immune system making individual vulnerable to all other

A. diseases
B. viruses
C. bacteria
D. fungus
Answer» B. viruses
79.

Subunits of capsid are called

A. capsule
B. capsomeres
C. centromeres
D. centrioles
Answer» C. centromeres