Five things that living organisms need to survive Select a lesson
 

Fine important needs of all living organismsThe basic needs of living thingsLiving things need sunlightLiving things need waterLiving organisms need airLiving orgnisms need nutrientsLiving organisms need ideal temperature




MORE SCIENCE LESSONS:

Asexual Reproduction
Clouds
Charact' of Living Things
Elements, mixtures, comp.
Electricity

Energy
Forces
Genetics

Nutrients in Food
Photosynthesis
Rock Cycle
Simple Machines
Soils
States of Matter
The Five Senses
Water Cycle
Winds
What do plants need to survive



Water

Water is needed in many ways and quantities by living things. Water may be consumed by living things, or may be a habitat for them. Animals that use water as their habitat or home are called aquatic animals. Sometimes, there are many nutrients or chemical compounds dissolved in water, and the concentrations often decide which animals can live them. For example, some fish like herrings live in salty sea waters, whiles tilapia and salmon live in fresh water with very little or no salt concentrations.
water
Plants:
Plants need enough hydration to carry out photosynthesis. They get the water they need from the soil through their roots. The water in plants carries nutrients to other parts of the plant. Some plants such as the water lily need a lot of water, whiles desert cacti can go for months with out water. Water keeps plant firm and upright (turgid). They go flaccid when they go without water and soon, they die.

Some plants such as seaweed and algae absorb carbon dioxide dissolved in water.

Animals:
Animals also need water to carry out cell activity. Some animals drink water regularly to keep hydrated, digest food and build body fluids. Some fishes need salt water and others need fresh water. Many kinds of fish such as clams and trout get oxygen from water.

Some animals have water as their habitat. Other such as frogs and turtle need water to lay eggs and reproduce. The anaconda snakes, together with many reptiles live in water. Fresh water often carries lots of dissolved nutrients that aquatic organisms depend on. Without water, they will not survive.


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What do animals need to survive