ThinkRankLiving Creatures: Exploring their Characteristics
Living organisms carry out processes that allow them to survive, grow, respond, reproduce, and maintain their bodies. No single feature should be used alone to decide whether something is living. By comparing plants, animals, and microorganisms, students can recognise life processes as connected patterns rather than isolated facts.
Learning Objectives
- •List important characteristics of living organisms
- •Distinguish growth from simple increase in size
- •Explain why response and reproduction matter
- •Compare life processes in plants and animals
Key Concepts
Life processes work together
Nutrition, respiration, excretion, growth, movement, response, and reproduction are connected aspects of living systems.
Movement is not the only sign of life
Plants may not move from place to place, but they grow, respond, exchange gases, and reproduce.
Growth has meaning
Living growth results from internal processes, unlike an object that becomes larger only because material is added from outside.
Terminology
Historical Insight
A growing plant
A plant responds to light, makes food, grows new parts, and reproduces even though it remains rooted.
Quick Check
Why is movement alone not enough to identify life?
How are respiration and nutrition related?
How to use this lesson
Read the overview first, then explain the main idea in your own words before checking the key concepts. Use the quick-check questions without looking at the answer. For examination preparation, verify dates, definitions, and syllabus requirements against your official textbook and school or examination-board guidance.