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LIFE PROCESSES
Looking at living things
Let’s Practice Tell if the object is living or nonliving.
Nonliving
Living
Living
Nonliving
Living
Living
Living
Living things Although all living things look different from each other, they all have seven things in common.
These seven things are called life processes. Something is only alive if it does all seven processes.
THE SEVEN LIFE PROCESSES
What are the different characteristics of living things?
1 All living things move
Why do living things move? How do insects, birds, fishes move? Do plants also move? How do animals move? Why do they move?
Animals move their whole bodies to get from one place to another. Plants turn towards the light and their roots grow down into the soil.
2 All living things reproduce
What is reproduction? Why do living things reproduce? How do plants reproduce? How do animals reproduce?
Animals have babies.
New plants grow from seeds.
3 All living things are sensitive
What do you understand by sensitivity? When somebody pricks your hand what do you do? When you see some insect near you do? What are the different sense organs? Do you think plants are also sensitive?
All living things respond to changes. Living things notice changes in their surroundings and react to them. Eg. Plants grow towards the light. Eg. People react to the temperature around them.
4 All living things need nutrition
What is nutrition? Why do living organisms require food? How do plants produce food? Name the process. Why are leaves green? How do animals produce food?
Food is used to provide energy.
Green plants make their own food using sunlight.
Animals eat plants or other animals.
5 All living things excrete
What is excretion? Why do living things excrete? How do animals excrete? Do plants have any organs for excretion?
Waste substances must be removed from the body. Plants and animals both need to get rid of waste gas and water.
Organism
Excretory product
Organs of the excretory system
Humans
Urea
Kidneys, liver, bladder.
Birds , reptiles , insects
Uric acid
kidneys
Fishes
Ammonia
Excretion of waste through diffusion. Kidneys, gills and skin.
6 All living things respire
What is respiration? Do plants also respire/ how do plants breathe? How do different animals breath? ( write about breathing in land animals, fishes, worms and insects)
Plants and animals use the oxygen in the air to turn food into energy.
Organism
Organ
How do they respire ?
Humans
Lungs
Mammals take in the oxygen from air through nasal opening, which is then passed to the lungs. Sac like structures in the lungs are responsible for gas exchange. Blood plays an important role in gas exchange.
Earthworms and snakes
Skin
Network of capillaries just lie below the skin which facilitates gas exchange between the external environment and circulatory system
Organisms
Organs
How do they respire?
Fishes ( needs dissolved oxygen)
Gills
Gills are highly branched and folded tissues, when dissolved oxygen passes over gills, it rapidly diffuses into the bloodstream.
Insects ( respiration is independent of circulatory system)
Trachea
Tracheal system consists of network of small tubes which carry oxygen to all parts of the body.
7 All living things grow
What is growth? Do all living things grow? How do plants and animals grow?
Babies grow into adults.
Seedlings grow into plants.
The seven life processes 1 Move 2 Reproduce 3 Sensitive 4 Nutrition 5 Excrete 6 Respire 7 Grow
Use the first letter from each process to help you remember them. Move Reproduce Sensitive Nutrition Excrete Respire Grow They spell MRS NERG
This is MRS NERG ! Can you remember what each of the letters in her name stand for ?
Move Reproduce Sensitive Nutrition Excrete Respire Grow
Well done !
Looking at living things
Let’s Practice Tell if the object is living or nonliving.
Nonliving
Living
Living
Nonliving
Living
Living
Living
Living things Although all living things look different from each other, they all have seven things in common.
These seven things are called life processes. Something is only alive if it does all seven processes.
THE SEVEN LIFE PROCESSES
What are the different characteristics of living things?
1 All living things move
Why do living things move? How do insects, birds, fishes move? Do plants also move? How do animals move? Why do they move?
Animals move their whole bodies to get from one place to another. Plants turn towards the light and their roots grow down into the soil.
2 All living things reproduce
What is reproduction? Why do living things reproduce? How do plants reproduce? How do animals reproduce?
Animals have babies.
New plants grow from seeds.
3 All living things are sensitive
What do you understand by sensitivity? When somebody pricks your hand what do you do? When you see some insect near you do? What are the different sense organs? Do you think plants are also sensitive?
All living things respond to changes. Living things notice changes in their surroundings and react to them. Eg. Plants grow towards the light. Eg. People react to the temperature around them.
4 All living things need nutrition
What is nutrition? Why do living organisms require food? How do plants produce food? Name the process. Why are leaves green? How do animals produce food?
Food is used to provide energy.
Green plants make their own food using sunlight.
Animals eat plants or other animals.
5 All living things excrete
What is excretion? Why do living things excrete? How do animals excrete? Do plants have any organs for excretion?
Waste substances must be removed from the body. Plants and animals both need to get rid of waste gas and water.
Organism
Excretory product
Organs of the excretory system
Humans
Urea
Kidneys, liver, bladder.
Birds , reptiles , insects
Uric acid
kidneys
Fishes
Ammonia
Excretion of waste through diffusion. Kidneys, gills and skin.
6 All living things respire
What is respiration? Do plants also respire/ how do plants breathe? How do different animals breath? ( write about breathing in land animals, fishes, worms and insects)
Plants and animals use the oxygen in the air to turn food into energy.
Organism
Organ
How do they respire ?
Humans
Lungs
Mammals take in the oxygen from air through nasal opening, which is then passed to the lungs. Sac like structures in the lungs are responsible for gas exchange. Blood plays an important role in gas exchange.
Earthworms and snakes
Skin
Network of capillaries just lie below the skin which facilitates gas exchange between the external environment and circulatory system
Organisms
Organs
How do they respire?
Fishes ( needs dissolved oxygen)
Gills
Gills are highly branched and folded tissues, when dissolved oxygen passes over gills, it rapidly diffuses into the bloodstream.
Insects ( respiration is independent of circulatory system)
Trachea
Tracheal system consists of network of small tubes which carry oxygen to all parts of the body.
7 All living things grow
What is growth? Do all living things grow? How do plants and animals grow?
Babies grow into adults.
Seedlings grow into plants.
The seven life processes 1 Move 2 Reproduce 3 Sensitive 4 Nutrition 5 Excrete 6 Respire 7 Grow
Use the first letter from each process to help you remember them. Move Reproduce Sensitive Nutrition Excrete Respire Grow They spell MRS NERG
This is MRS NERG ! Can you remember what each of the letters in her name stand for ?
Move Reproduce Sensitive Nutrition Excrete Respire Grow
Well done !
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