2.1 describe the levels of organisation within organisms: organelles, cells, tissues, organs and systems.
example suing Plant.
1. System: Composed of a group of organs working together on eg: Plant cell; Reproduction, Photosynthesis, Transport.
2. Organ: Group of different Tissues working together.
Leaf: 3 different Functions: Photosynthesis, Gas Exchange and Transpiration.
3. Tissue - Group of cells of the same kind = they have the same shape and function.
eg: Phloem - Cell that transports "sap"
eg: Xylem - Transports water and minerals.
eg: Plaside - Carries out P/S
4. Cells: multicelluler organinisum.
a) In development of the organism, the cell specializes: they switch on genes which change their shape giving the cell a particular function: This is called Cells differentiation