Biology Flashcards

Biology flashcards covering core concepts like the definition of biology, branches (botany, zoology, microbiology), characteristics of life, levels of organization, and basic life science principles. Useful for quick revision and foundational learning.

Flashcard Questions and Answers

Biology

The scientific study of life and living organisms.

Meaning of "Biology"

Derived from Greek: "bios" (life) + "logos" (study).

Branches of Biology

Main branches include Botany (plants), Zoology (animals), and Microbiology (microorganisms).

Botany

Study of plants — their structure, growth, reproduction, and classification.

Zoology

Study of animals — their anatomy, physiology, and behavior.

Microbiology

Study of microscopic organisms like bacteria, viruses, and fungi.

Cell Theory

All living things are made of cells. Cells are the basic unit of life.

Characteristics of Life

Living things grow, reproduce, respond, use energy, maintain homeostasis, and evolve.

Levels of Organization

Biological hierarchy: cell → tissue → organ → system → organism → population → ecosystem → biosphere.

Metabolism

All chemical reactions in the body that keep an organism alive.

Homeostasis

Maintaining stable internal conditions in the body.

Reproduction

The process of producing new organisms — sexual or asexual.

Adaptation

Changes in organisms to survive in their environment.

Evolution

Gradual change in species over time — explained by natural selection.

Importance of Biology

Helps us understand life, health, diseases, environment, agriculture, and biotechnology.

What is Biology?

Biology is the scientific study of life and living organisms.

Name the three main branches of Biology.

Botany, Zoology, and Microbiology.

What are the characteristics of living things?

Growth, reproduction, response, metabolism, homeostasis, and adaptation.

What is the smallest unit of life?

Cell

Why is Biology important?

It helps us understand living things, health, disease, and the natural world.

Biology

The scientific study of life and living organisms.

Meaning of "Biology"

Derived from Greek: "bios" (life) + "logos" (study).

Branches of Biology

Main branches include Botany (plants), Zoology (animals), and Microbiology (microorganisms).

Botany

Study of plants — their structure, growth, reproduction, and classification.

Zoology

Study of animals — their anatomy, physiology, and behavior.

Microbiology

Study of microscopic organisms like bacteria, viruses, and fungi.

Cell Theory

All living things are made of cells. Cells are the basic unit of life.

Characteristics of Life

Living things grow, reproduce, respond, use energy, maintain homeostasis, and evolve.

Levels of Organization

Biological hierarchy: cell → tissue → organ → system → organism → population → ecosystem → biosphere.

Metabolism

All chemical reactions in the body that keep an organism alive.

Homeostasis

Maintaining stable internal conditions in the body.

Reproduction

The process of producing new organisms — sexual or asexual.

Adaptation

Changes in organisms to survive in their environment.

Evolution

Gradual change in species over time — explained by natural selection.

Importance of Biology

Helps us understand life, health, diseases, environment, agriculture, and biotechnology.

What is Biology?

Biology is the scientific study of life and living organisms.

Name the three main branches of Biology.

Botany, Zoology, and Microbiology.

What are the characteristics of living things?

Growth, reproduction, response, metabolism, homeostasis, and adaptation.

What is the smallest unit of life?

Cell

Why is Biology important?

It helps us understand living things, health, disease, and the natural world.

Make the Most of These Flashcards

This set of flashcards on Biology is designed to help you remember key ideas quickly. Whether you're reviewing before a test or brushing up on the basics, each card highlights one concept at a time — making it easy to revise in short, focused sessions.

These flashcards are based on proven techniques like active recall and spaced repetition. The goal is not just to memorize terms, but to understand them well enough to explain confidently in your own words.

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