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.

4451.

The mucous membrane of the esophagus of mammals is made up of?

A. common columnar epithelium
B. squamous epithelium
C. layered dense epithelium
D. layered columnar epithelium
Answer» C. layered dense epithelium
4452.

Orthopoda has a body cavity?

A. pseudocele
B. homoseal
C. coelom
D. none of these
Answer» C. coelom
4453.

How much is CO in the atmosphere?

A. 0.03
B. 0.02
C. 0.04
D. 0.07
Answer» B. 0.02
4454.

In the nitrogen cycle, which bacterium is responsible for nitrification?

A. Rhizobium
B. nitromonas
C. Nitromonas and Nitrobacter
D. none of these
Answer» D. none of these
4455.

Name of the person known as 'Jalpurush'?

A. Rajendra Singh
B. Mohan Singh
C. Gopalnath
D. none of these
Answer» B. Mohan Singh
4456.

What is a greenhouse made of?

A. of glass
B. Of iron
C. of brass
D. none of these
Answer» B. Of iron
4457.

What is the immune system found inside our body?

A. ability to fight germs
B. special cell types
C. both A and B
D. none of these
Answer» B. special cell types
4458.

Which layer of the atmosphere is the troposphere?

A. outermost layer
B. bottom layer
C. top layer
D. none of these
Answer» C. top layer
4459.

Which of the following is known as brown algae?

A. laminaria
B. Yeast
C. spirogyra
D. ulothrix
Answer» B. Yeast
4460.

What is the liquid form of water?

A. water (water
B. Solid (buff
C. gaseous (water vapor
D. none of these
Answer» B. Solid (buff
4461.

Which of the following is affected by foliar worms inside the body of cows and buffaloes?

A. liver
B. kidney
C. brain
D. stomach
Answer» B. kidney
4462.

How does respiration in arthropods take place?

A. Gilles
B. trachea
C. boomlangs
D. all of them
Answer» E.
4463.

Is the BCG vaccine given?

A. to protect against polio
B. To prevent tuberculosis
C. for both
D. to prevent malaria
Answer» C. for both
4464.

What is the life health program run by the government for protection against infectious diseases?

A. health facilities
B. examination of patients
C. vaccination
D. all of which
Answer» D. all of which
4465.

AIDS is a disease caused by infection?

A. by air
B. by animals
C. by sex organs
D. by water
Answer» D. by water
4466.

Which of the following is a disease caused by bacteria?

A. Tetanus
B. Malaria
C. poliomyelitis
D. filariasis
Answer» B. Malaria
4467.

What is meant by health?

A. from physical health
B. from social health
C. from mental health
D. suitable all
Answer» E.
4468.

Do antibiotics affect?

A. to bacteria
B. to virus
C. to viruses
D. all of them
Answer» B. to virus
4469.

What is the cause of filariasis or elephantiasis?

A. bacteria
B. Nematode worms
C. protozoa
D. virus
Answer» E.
4470.

Rabies disease?

A. by mosquito
B. by rats
C. by dogs
D. in the flies
Answer» D. in the flies
4471.

Is it necessary for personal health?

A. balanced diet
B. clean water
C. unpolluted environment
D. none of these
Answer» E.
4472.

Controlling mosquito by using chemical substances is called?

A. biological control
B. chemical control
C. both
D. none of these
Answer» C. both
4473.

Quinine medicine is used for?

A. in cholera
B. in jaundice
C. in malaria
D. all of which
Answer» D. all of which
4474.

Carriers of infectious diseases?

A. fly
B. dogs
C. Mosquito
D. none of these
Answer» E.
4475.

What is the medium of transmission of infectious diseases?

A. water
B. Wind
C. both
D. none of these
Answer» D. none of these
4476.

Tuberculosis is a disease caused by?

A. by bacteria
B. from malnutrition
C. by protozoa
D. by virus
Answer» B. from malnutrition
4477.

What is the cause of polio disease?

A. bacteria
B. protozoa
C. Virus
D. none of these
Answer» D. none of these
4478.

Which of these diseases is not contagious?

A. Typhoid
B. leukemia
C. midges
D. leprosy
Answer» C. midges
4479.

What are the mechanisms affected in polio disease?

A. circulatory system
B. excretory system
C. Nervous system
D. the respiratory system
Answer» D. the respiratory system
4480.

Jaundice is affected in the disease?

A. liver
B. gut
C. Pancreas
D. kidney
Answer» B. gut
4481.

Which of these diseases is contagious?

A. Malaria
B. cancer
C. Hypertension
D. diabetes
Answer» B. cancer
4482.

Organisms that cause disease are called?

A. parasites
B. Prey
C. disease factor
D. disease carrier
Answer» E.
4483.

What is the common name of Ascaris?

A. Pinworm
B. shipworm
C. Roundworm
D. tapeworm
Answer» D. tapeworm
4484.

Monkey is placed in which of the following federations?

A. Mammalus
B. Reptilia
C. insecta
D. Pieces
Answer» B. Reptilia
4485.

Plants are made disease resistant by?

A. Kalchisin
B. Reproduction
C. harmonas
D. heat
Answer» C. harmonas
4486.

What is the main function of epithelial tissue?

A. convection
B. reproduction
C. Defence
D. emissions
Answer» D. emissions
4487.

Gir, Sahiwal and Lal Singhi are its different breeds.

A. cattle
B. sheep
C. goat
D. buffalo
Answer» B. sheep
4488.

Pneumatic bones are found in?

A. Whale
B. Snake
C. Peacock
D. dolphin
Answer» D. dolphin
4489.

Which of the following kit is a social animal?

A. honey bee
B. Mosquito
C. Groom
D. house fly
Answer» B. Mosquito
4490.

What should a plant breeder do to produce a disease resistant subspecies?

A. selection
B. mutation
C. Crop-production
D. hybridization
Answer» B. mutation
4491.

Which of the following is not a seafood fish of India?

A. Surmai
B. flying mine
C. echinoderms
D. Hilsa
Answer» D. Hilsa
4492.

Was the ribosome discovered?

A. by fontana
B. by benda
C. the porter
D. paled
Answer» E.
4493.

Endoplasmic reticulum was discovered by?

A. the porter
B. by Darwin
C. Huxley
D. Purkinje
Answer» B. by Darwin
4494.

Which of the following is not a fat fodder for animals?

A. barseem
B. lovia
C. cottonseed
D. Garlic grass
Answer» D. Garlic grass
4495.

Poultry is an exotic breed of bird with high egg laying capacity?

A. white leghorn
B. Broiler
C. white cornish
D. new hemisphere
Answer» B. Broiler
4496.

Where is food usually stored?

A. in the soft
B. in the firmament
C. in macroscopic tissue
D. in both A and B
Answer» B. in the firmament
4497.

Bee's wax glands are present in?

A. Queen
B. labor
C. male bee
D. none of these
Answer» C. male bee
4498.

Where was the first living cell seen?

A. by robert hook
B. leuwenhoek
C. Swann and Schlaiden
D. by robert brown
Answer» C. Swann and Schlaiden
4499.

On the basis of color, how many types of lava are there?

A. 2
B. 3
C. 4
D. 5
Answer» C. 4
4500.

Where is DNA found?

A. in the green
B. in mitochondria
C. in the nucleus
D. in all these
Answer» E.