lesson 1 & 2 pdf.pdf

Plant needs 1) All living organisms have basic need must meet to survive. 2) Human and animals need : air , water and food to grow and get energy. 3) What do plants need to survive and grow ?? 4) 1 5) 6) But plant...

Plant needs 1) All living organisms have basic need must meet to survive. 2) Human and animals need : air , water and food to grow and get energy. 3) What do plants need to survive and grow ?? 4) 1 5) 6) But plants can make their own food by ‘’ photosynthesis process’ ’which takes place in leaves. GR Plants don't need food ?? Bec, thay can make their own food through photosynthesis process. GR Photosynthesis is Important to the plant ? Bec , it helps the plant to make its own food. GR Roots are important to the plant ? Bec , they absorb water and nutrients from the soil. 7) Basic need to plants to make its own food are ………. 2  co 2 Leaves absorb sunlight and carbon dioxide. Roots absorb water and nutrients from the soil. Photosynthesis process Sunlight allow carbon dioxide to combine with water to produce. o2 Oxygen sugar  All living organisms need oxygen to  Sugar is the plant food which breath,. help it to grow and provide it with energy animal Photosynthesis process o2 Oxygen co 2 sunlight carbon dioxide sugar water sunlight allows carbon dioxide to combine with water to make sugar , which gives the plant the energy it needs to grow. 3 4  Germination : The process in which the plant sprouts and begins to grow from the seed. 1- In germinating the seeds can grow without soil if they have water and sun Experiment We will germinate seeds in wet paper towel and in soil. Wet paper towel soil Wet paper towel soil After 7 Days After 14 Days - Its 3 cm - Its 3 cm - Its just - Its 9 tall. tall 4 cm tall. cm tall. - The initial ( first stage ) growth of The seeds grown without soil would not seeds placed in paper towel is similar grow as quickly as the seeds in the soil. to that of the seeds planted in the soil. 2- plants can grow without soil for a while , but finally they need soil. 5 Experiment shows the effect of sun light on plant growth With light Without sun light - The plant is - The plant is tall. short. - The plant - The plant has.has four leaves two small with dark leaves , with green. pale (yellow)green color. 6  Conclusions - Sun Light is a basic need for the plants , like water , air and nutrients. - Light is important to plant growth because plants use light to make their own food , so the plant without light does not grow well because it had less food. Sunlight light is important for the plant growth ? Bec , it helps the plant to make its own food ( photosynthesis process). What happened if We put the plant in dark place ? it cannot helps the plant to make its own food ( photosynthesis process) and it will die. 7 8