sábado, 30 de enero de 2016

Hi kids! New lovely topic to study :)
Look at this image. Can you match the words to the definition?
You must know...

  • ROOTS hold the plant in the ground. Roots absorb water and minerals needed for nutrition from the ground through the root hairs.
  • STEM holds up the other parts of the plant. It also transports materials to and from the leaves. Water and minerals travel through the stem to the leaves for photosynthesis. The food produced through photosynthesis then travels to the other parts of the plant.
  • LEAVES contain chlorophyll, a green substance which is necesarry for photosynthesis. Most leaves have two parts: the petiole and the blade. Veins in the blade support the leaf and carry water and minerals. On the underside of the blade, there are tiny holes, called stomata. The gas exchange in leaves takes place through stomata. Do you want to know how to draw a leaf? Watch this video  WEB
I suggest that you use this application, it is amazing!  WEB  
Do you want to get this certificate?
The course is very easy and it will help you
 to study your new lesson :) Here you have some images from the course.
If you don´t want to do the course, watch this easy video about photosynthesis VIDEO or the difficult one :)  VIDEO

Do you really know the process of photosynthesis? Have a look! :)
  1. The roots absorb water and minerals from the soil.
  2. Xylem cells transport this mixture of water and minerals, called raw sap, through the stem to the leaves.
  3. Leaves absorb carbon dioxide (CO2) through their stomata. In certain parts of the plant cells called chloroplasts, chlorophyll collects solar energy to transform water, minerals and carbon dioxide into glucose and oxygen (O2).
  4. Phloem cells carry the glucose, the plants´food, through the stem to all the parts of the plant.
Why photosynthesis is the most important process to life on Earth?
  • The photosynthesis provides us with oxygen to breathe. For this reason plants are called the lungs of the Earth.
  • It consumes carbon dioxide, which is toxic to most living things.
  • It transforms water and minerals into food. Then animals can feed on plants to get energy to live.
Good job, guys! Here you have your word list! Study hard! :)