Blood circulate around the body, distributing nutrients to your body and collecting carbon dioxide and other waste from the cells. At this stage, the colour of the blood darkened as there is less oxygen left. As heart muscle relax, blood flows back to the heart through vein.
After that, blood containing carbon dioxide leave the heart to the lungs so that carbon dioxide can be removed when you breathe out.
adapted from: lead.com
Ciculatory system in plants
(picture is taken from web)
A plant’s transportation system is made up of two tubes: xylem and phloem.
(To help you remember: Xylem is situated in the inner part of the stem. Xylem vessels transport water and mineral salts. Water is vital to the survival of the plant so like heart, it is located centrally.)
Pholem vessels transport food. (Remember: food has ‘O’ so phloem transports food. As food is not so important as compared to water, it can be located further away)
Words in Italic are written to help you remember the position of xylem and phloem and their functions. You do not write like that in the examination. :D
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1 comment:
this is sooooooooo useful! thanks,Miss Lee!
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