Monday, 12 December 2011

Basic Needs Of Plants

Basic Needs Of Plants
  • Air
  • Water
  • Sunlight
Plants Need Air
Plants need oxigen from the air for respiration. Plants also need carbondioxide from the air to make food. Plants make food throgh
photosynthesis. Plants will die without air.

Plants Need Water
Plants absorb water from the soil through their roots. Plants need water for making food during photosynthesis, transporting food and minerals to the plant tissues.

Plants Need Sunlight
Green plants can make their own food through photosynthesis. Sunlight is necessary for photosynthesis. Without sunlight plants will die. Sunlight provides the energy needed for water to combine with carbon dioxide to produce glucose in the leaves. Oxygen is produced as a by-product.

Pictures show what is basic need of plants

Sunday, 11 December 2011

Water is esential to humans and animals.

Humans and animals need water to :
  • maintain the body temprature
  • transport digested food throughtout the body
  • help in removing waste from the body
  • help in blood circulation
Humans and animals wil die if they do not get sufficient water for a long time. Humans should drink about eight glasses of water daily.
Vegetables, milk and fruits contain water.
                                                                    Humans need water

                                                         Animals need water

                              fruits                                                                                Vegetables
                                                     Vegetables and friuts that contain water
Different types of shelter for animals :





                                                                 Coral reef