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Biology Introduction MCQs

Biology Introduction MCQs cover the foundations of biology, including levels of biological organisation, the scientific method, branches of biology and applications such as breeding and radioactive dating. They help MDCAT, NEET UG and medical admission candidates start their biology preparation. Every question shows its correct answer instantly, so you can check each concept quickly.

Question 01 Biology

What kind of collection of organisms are communities?

Correct answer C. Dynamic

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Question 02 Biology

The arrangement of which structures reflects the division of labour within a cell?

Correct answer B. Organelles

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Question 03 Biology

What percentage of the human body’s mass is oxygen?

Correct answer B. 65%

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Question 04 Biology Introduction

Which of the following is the correct sequence in the biological method?

Correct answer B. Observation? hypothesis? deduction? testing of deduction

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Question 05 Biology

The number of species of organisms currently known to science is

Correct answer C. 2500000

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Question 06 Biology

Biological organization is

Correct answer D. highly complex

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Question 07 Biology

In human body 99% of total mass is formed of

Correct answer D. 6 bioelements

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Question 08 Biology Introduction

Which of the following is not a viral disease?

Correct answer C. Tetanus

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Question 09 Biology

Removal or degradation of environmental pollutants or toxic materials by living organisms is called

Correct answer D. Bioremediation

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Question 10 Biology Introduction

Which statement is incorrect for cloning?

Correct answer D. It involve methods of sexual reproduction

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Question 11 Biology

Which treatment is instituted in a cancerous patient:

Correct answer B. Radiotherapy

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Question 12 Biology Introduction

Which of the following statement is incorrect about antibiotics?

Correct answer D. They are derived from bacteria only

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Question 13 Biology Introduction

Which disease has been totally eradicated from the world because of effective vaccination?

Correct answer C. Small pox

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Question 14 Biology

Vaccine was first developed by

Correct answer B. Edward Jenner

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Question 15 Biology Introduction

What is the mode of transmission of Hepatitis virus?

Correct answer B. Parentral (via blood)

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Question 16 Biology Introduction

Which statement is incorrect for pasteurization?

Correct answer D. It can be used to preserve vegetables and meat.

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Question 17 Biology Introduction

Production of genetically identical copies of organisms/cells by asexual reproduction is called

Correct answer C. Cloning

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Question 18 Biology

Breeders have developed new and better varieties of food items by using which technique:

Correct answer C. Genetic engineering

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Question 19 Biology

Conclusion of Mendels work latter became a

Correct answer C. Scientific law

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Question 20 Biology

Which one is not correct for a productive theory?

Correct answer C. It discourages suggestion of different hypotheses

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About Biology Introduction MCQs

This opening chapter of the biology syllabus sets out how living things are studied. Questions cover levels of organisation from atoms and molecules up to populations, communities and the biosphere, and the steps of the scientific method, including hypothesis, theory and law. You will also see items on viral diseases, plant breeding techniques, the use of radioactive isotopes to date rocks and fossils, and evolutionary series of species. Because entry tests often draw easy marks from this chapter, mastering its definitions is a quick way to build confidence early in medical admission preparation.

Exams that include Biology Introduction MCQs

Pakistan

MDCAT
ETEA
NTS

India

NEET UG
CUET

Bangladesh

Medical admission test (MBBS)
University admission tests (DU, RU, JU)

Frequently asked questions

What are the levels of biological organisation?

The levels of biological organisation run from atoms and molecules to organelles, cells, tissues, organs, organ systems and organisms. Beyond the individual come populations, communities, ecosystems and the biosphere. Entry test MCQs often ask you to identify the correct order or to define a community or population.

What is the difference between a hypothesis and a theory?

A hypothesis is a testable, tentative explanation for an observation. A theory is a broader explanation supported by repeated testing and a large body of evidence from many hypotheses. A theory can still be revised if new evidence contradicts it, which is why science remains open to correction.

How many Biology Introduction MCQs are on MCQs360?

MCQs360 has 38 Biology Introduction MCQs, free to practise without sign-up, each with an instant answer. They are a good starting point for MDCAT or NEET UG biology because they cover definitions that later chapters build on.

Last reviewed October 2026