Free Introduction to Biology MCQs with Answers

1. The branch of biology which deals with the organisms living in freshwater bodies is:

• A. Environmental biology
• B. Microbiology
• C. Ecology
• D. Freshwater biology

Explanation: A. Study of organisms in relation to their environment with respect to human impact. B. Study of microorganisms, viruses, protozoa, etc. C. Ecology is the study of interactions between organisms in their environment.

2. This is a branch of biology which deals with the parasites:

• A. Human biology
• B. Social biology
• C. Parasitology
• D. Biotechnolgy

Explanation: A. Deals with the study of man B. Deals with the study of human behavior in human beings. D. Use of living organisms, systems, or processes in manufacturing and service industries.

3. The part of earth inhabited by living organisms including land, ocean, and atmosphere:

• A. Biosphere
• B. Ecosystem
• C. Community
• D. Habitat

Explanation: B. A community together with its non-living surroundings. C. Two or more populations of different species living and interacting in the same area. D. Actual place where an organism lives in an ecosystem.

4. The members of one species inhabiting the same area are called?

• A. Population
• B. Multicellular organism
• C. An organ
• D. Species

Explanation: A. Population consists of members of one species inhabiting the same area. B. Multicellular Organism is an individual living thing composed of many cells. C. An organ is a structure normally composed of several tissue types. D. Species are organisms that are very similar and carry the potential of inbreeding.

5. Which of these is an example of the tissue level in plant:

• A. Muscle tissue
• B. Glandular tissue
• C. Liver
• D. Phloem tissue

Explanation: A. Animal tissue B Animal tissue C. An organ in animals

6. Which of these is an example of organ level in plants:

• A. Xylem tissue
• B. Stomach
• C. Stem
• D. Mesenchyme

Explanation: Xylem is a vascular tissue in plants that conveys water and dissolved minerals from the roots to the rest of the plant and also provides physical support. B. Organ in animals Mesenchyme is a type of loosely organized animal embryonic connective tissue of undifferentiated cells that gives rise to blood and lymph vessels, bone, and muscle.

7. A city named Lahore is an example of which level of organization?

• A. Community
• B. Population
• C. Ecosystem
• D. Species

Explanation: A. Community refers to the living part of an ecosystem B. Population is a group of living organisms of the same species. C. Ecosystem is a community with its non-living surroundings. D. Species are organisms that are very similar and carry the potential of inbreeding.

8. A large regional community primarily determined by climate is:

• A. Mutualism
• B. Competiton
• C. Biome
• D. Parasitism

Explanation: The correct answer is a biome. A large regional community primarily determined by climate is referred to as a biome. A biome is a specific geographic area characterized by distinct climatic conditions, such as temperature, precipitation, and seasonal variations. The plant and animal species found within a biome are adapted to the prevailing environmental conditions of that region.

9. The number and variety of species in a place is called:

• A. Biome
• B. Biosphere
• C. Biodiversity
• D. Phyletic lineage

Explanation: A. A large regional community primarily determined by climate. B. Part of earth inhabited by living organisms D. Lineage which shows phylectic linkages

10. If we accept that birds have wings and the sparrows are birds then we conclude sparrows have wings is a example of:

• A. Inductive reasoning
• B. Deductive reasoning
• C. Hypothesis
• D. Science

Explanation: A. Reasoning from specific to general C. A statement per experience and background knowledge D. A systemized knowledge