Needs of Living Things

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Needs of Living Things

• Created by Sharon Ricks

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Characteristics of Living Things

• Made up of cells
• Uses energy
• Can adapt
• Respond to surroundings
• Reproduce
• Grow and Develop

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Adaptations

• An adaptation is a trait of a living thing that
  helps it live in its environment.

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Adaptations

• Adaptations make each living thing suited to life
  in its environment

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Adaptations

• Polar bears have thick fur layers of fat to
  survive in the cold.
• Cactuses have thick leathery stems to store water
  and help them survive in the desert

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Response

• A Response is when a living thing reacts to
  stimuli
• Stimuli is a change in your surroundings

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Response

• All living things respond to stimuli
• Living things respond in different ways
• The ways in which living things respond is called
  behavior

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Response

• Migration to warm places in a response
• Hibernation (sleeping) through the winter months
  is another example

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Spontaneous Generation

• Spontaneous Generation is the idea that living
  things come from nonliving things.
• Francesco Redi disproved this theory.

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Reproduction

• Reproduction is the process by which living
  things produce new organisms (offspring) like
  themselves.

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Two Types of Reproduction

• Asexual Reproduction
• reproduction needing only one parent
• Sexual Reproduction
• reproduction needing two parents

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What are Life Processes?

• Life processes are the things an organism must do
  to stay alive
• Living things carry out all life processes

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Life Processes

• Ingestion
• Digestion
• Respiration
• Excretion
• Transport

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Life Processes

• Ingestion
• taking in food
• Digestion
• breaking food down so it can be used

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Life Processes

• Respiration
• getting energy from food
• Excretion
• getting rid of waste
• Transport
• moving nutrients and waste

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What Do Living Things Need?

• Food
• Water
• Air
• Temperature
• Living Space

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Food Water

• Food is necessary for growth energy
• Plants animals cannot survive without water

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Water

• Water is used to transport stuff through living
  things
• Water is necessary to carry out chemical changes
  in living things

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Air

• Air is a mixture of gases
• Oxygen is used by many living things to change
  food into energy

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Air

• Land organisms get oxygen from the air
• Water organisms get oxygen from water
• Oxygen is dissolved in water

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Temperature

• Proper temperature is necessary for living things
  to carry out life processes
• Many living things would die without homeostasis

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Temperature

• Homeostasis is the ability of a living thing to
  keep conditions inside its body constant

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Temperature

• Homeostasis keeps life processes working even if
  external temperature changes

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Living Space

• Living space includes air, water, sunlight, food,
  and shelter
• Organisms need living space to survive
• Organisms compete for living space