Top Biology MCQs for Competitive Exams | NEET | MDCAT | Class 11 & 12 | Test Your Knowledge

The heart is enclosed in membrane called:

(A) Pleura

(B) Pericardium

(C) Peritoneum

(D) Epithelium

A seed may be defined as a fertilized:

(A) Egg

(B) Ovule

(C) Embryo

(D) Ovary

The first land vertebrates were:

(A) Amphibian

(B) Dipnoi

(C) Reptile

(D) Aves

Single membrane bounded organelle is:

(A) Lysosome

(B) Ribosome

(C) Nucleus

(D) None of these

0°C has maximum density is:

(A) 0°C

(B) 2°C

(C) 4°C

(D) -4°C

Functional unit of DNA is:

(A) Nucleus

(B) Genes

(C) Chromosomes

(D) Tissues

Various tissue types combine to make up:

(A) Organs

(B) Cells

(C) Nucleus

(D) None of these

Blood is carried towards the heart by:

(A) Arteries

(B) Capillaries

(C) Veins

(D) None of these

Which component of the body works as an energy storage device…?

(A) Fats

(B) Proteins

(C) Skin

(D) Liver

Plants can be which of the following…?

(A) Angiosperms

(B) Gymnosperms

(C) Mushrooms

(D) Both A & B

Which organelle is responsible for protein synthesis…?

(A) Nucleus

(B) Ribosome

(C) Golgi apparatus

(D) Lysosome

Which part of the brain is responsible for coordination and balance…?

(A) Cerebrum

(B) Cerebellum

(C) Medulla oblongata

(D) Thalamus

The outermost layer of the root is…?

(A) Endodermis

(B) Cortex

(C) Pericycle

(D) Epidermis

The branch of Biology which deals with the use of data and techniques of engineering & technology concerning living organisms is:

(A) Human biology

(B) Environmental Biol

(C) Genetics

(D) Bio-technology

A group of very similar inter breeding organisms constitutes…?

(A) Biosphere

(B) Ecosystem

(C) Population

(D) Species

People living in high altitudes (like mountains) usually have a…?

(A) smaller number of Red Blood Cells

(B) larger number of Red Blood Cells

(C) smaller number of White Blood Cells

(D) larger number of White Blood Cells

Immunization by vaccination was first introduced by…?

(A) Fleming in 1945

(B) Florey & Chain in 1945

(C) Florey & Chain in 179

(D) Edward Jenner in 179

An educated guess is called:

(A) Accumulated Data

(B) Observation

(C) Hypothesis

(D) Conclusion

What is the percentage of proteins in the cell membrane…?

(A) 60-80%

(B) 80-100%

(C) 100-120%

(D) 120-140%

If more substrate to already occurring enzymatic reaction is added, and there is no effect on the reaction, what is the form given to this situation…?

(A) Composition

(B) Inhibition

(C) Saturation

(D) Denaturation

Which is the largest gland in the human body…?

(A) Thyroid

(B) Liver

(C) Pancreas

(D) NOT

The human heart is…?

(A) Neurogenic heart

(B) Myogenic heart

(C) Pulsating heart

(D) Ampullary heart

The maximum amount of carbon dioxide in the human body is transported as…?

(A) Bicarbonate

(B) Carbide

(C) Amylase

(D) NOT

Most cell membranes are composed principally of…?

(A) DNA and Protein

(B) Protein and Lipids

(C) Protein and chitin

(D) Protein and RNA

Which is not recycled in the ecosystem…?

(A) Wind

(B) Carbon

(C) Oxygen

(D) Energy

Haemodialysis means cleaning of…?

(A) Urine

(B) Blood

(C) Glomerular filtrate

(D) Coelomic fluid

Vivipary is defined as germination…?

(A) During storage

(B) Within the fruit

(C) with cotyledons coming out of soil

(D) with cotyledons remaining inside soil

Who is known as father of Zoology…?

(A) Darwin

(B) Aristotle

(C) Lamarck

(D) Theophrastus

What is the source of oxygen in the process of Photosynthesis:

(A) Water

(B) Salts

(C) Minerals

(D) Glucose

In which animal respiratory surface are found in more than one organ?

(A) Human

(B) Frog

(C) Fish

(D) Birds

Science of diagnosis and treatment of diseases…?

(A) Agriculture

(B) Medicine

(C) Surgery

(D) Both B and C

Biological name of cat is…?

(A) Felis catus

(B) Azadirachta

(C) Allium Cepa

(D) Canis lupus

Similar cells combine together to form…?

(A) Organs

(B) Tissues

(C) Body

(D) System

Which is not recycled in the ecosystem…?

(A) Wind

(B) Carbon

(C) Oxygen

(D) Energy

The energy currency of the cell is…?

(A) ATP

(B) DNA

(C) RNA

(D) ADP

Study of liver is called…?

(A) Mycology

(B) Hematology

(C) Hepatology

(D) None of these

Self-pollination is not possible in…?

(A) Dioecious plants

(B) Papaw

(C) Flove

(D) Both A and B

Which of the following organ is responsible for blood filtration…?

(A) Liver

(B) Kidney

(C) Heart

(D) Lungs

Parkinson is a disease of…?

(A) Bones

(B) Eyes

(C) Lungs

(D) Brain

Which of the following is called protein synthesizing machine…?

(A) Mitochondria

(B) Nucleus

(C) Chromosome

(D) Ribosome

Cell wall is the non-living, outer most boundary of …cell…?

(A) Plant

(B) Fungal

(C) Bacterial

(D) All of the above

The name animal is derived from word…?

(A) Anima

(B) Animae

(C) Name

(D) All of these

Which of the following has thickest walls…?

(A) Arteries

(B) Veins

(C) Capillaries

(D) None of these

Functional unit of Tissue…?

(A) Nucleus

(B) Genes

(C) Chromosomes

(D) Nucleolus

Member of one species inhabiting the same area…?

(A) Species

(B) Community

(C) Ecosystem

(D) Population

Human blood is example of…?

(A) Organelle

(B) Tissues

(C) Organic compound

(D) Inorganic Compound

The first antibiotic to be discovered was…?

(A) Penicillin

(B) Cephalosporin

(C) Amino glycosides

(D) Erythromycin

Two or more populations of different species living and interacting in the same area form…?

(A) Biosphere

(B) Community

(C) Ecosystem

(D) Species

Organelles are…?

(A) Unicellular

(B) Multicellular

(C) Sub-cellular

(D) Non-cellular structure

Which of the following structure is a selectively permeable membrane…?

(A) Cell wall

(B) Cytoplasm

(C) Cell membrane

(D) None of these

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