Characterisitics of Living Things!

Characteristics of Living Things Notes PDF

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Characterisitics

of Living Things!


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Essential Question: How do scientist classify living organisms?

Key Concept: All living things have a set of common traits that

scientists use to help categorize living things.


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Living organisms have the same characteristics and needs.

This helps scientists classify things as living or nonliving.

Does it eat? Does it grow?

Does it move?

Does it interact?Does it

reproduce?


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Living NonLivingexamples: examples:


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5 Characteristics of Living Things

• 1. Living things are organized and made of cells

– cells: smallest unit of living matter

> can be singlecelled (very simple and selfsufficient)

> can be multicelled (different cells have different functions)

– example: blood cells, brain cells, skin cells,muscle cells, etc.


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Characteristics of Living Things

• 2. Living things respond to stimuli> Stimulus: any change in an organism's surroundings

that will cause the organism to react.

– Ex: change in light, background, temperature, space, water, food, or other organism

> Response: an organism's reaction to stimulus.

– Ex: running away, color change, hiding in shell, growing thicker fur


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• 3. Living things obtain and use energy

> Energy comes from food, oxygen, and water

> Helps living things grow and develop

– Autotrophs: (plants) make their own food

– Heterotrops: (animals) get food from other plants and animals

« Respiration: process where energy is released from food in most organisms


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• 4. Living things grow and develop

> Growth: process where organism becomes larger

– Ex: Getting taller

> Development: organisms become more complex

– Ex: Getting smarter

**Organism must have energy to grow and develop


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Characteristics of Living Things • 5. Living things reproduce

> Reproduce: make offspring that have similar characteristics as the parents.

• 2 types: Sexual vs. Asexual

• Sexual: 2 parents (sperm and egg) combination of both parents traits

• Asexual: 1 parent identical offspring to parent


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WHAT DO LIVING THINGS NEED?

1. A place to live

2. Water

3. Food


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Scientists have categorized all living things into 5 kingdoms.

Plants

Animals

Fungi

Protists 1 cell Bacteria/Monera 1 cell

(Monera Kingdom is sometimes divided into 2 groups)


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Is it a living organism?

1. Is it made of cells?

2. Does it respond to stimuli?

4. Does it grow and develop?

5. Does it reproduce?

3. Does it use energy?


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http://studyjams.scholastic.com/studyjams/jams/science/plants/kingdomsoflife.htm

Summary: How do scientists tell a living things from a non living thing? What are the characteristics of living things? What are the needs of a living thing?


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Characterisitics of Living Things!