First 247 words of the document:
-In multicellular organisms, cells are specialised to perform specific functions.
-Similar cells are then grouped together into tissues, tissues into organs and organs into
Groups of cell working together!
Epithelial tissues, which are found in animals and consist of sheets of cells. They
cover it and product body cells.
Xylem and phloem : transport mineral and ions in the plant.
Groups of tissue working together.
Muscles to churn and mix the stomach contents
Epithelium to protect the stomach wall and produce secretions
Glandular help the stomach secret enzymes.
Palisade mesophyll made up of leaf palisade cells that carry out photosynthesis
Spongy mesophyll adapted for gaseous diffusion
Phloem to transport organic materials away from the leaf
Xylem to transport water and ions into the leaf
Organ systems are groups of organs that work together to achieve a major physiological
function some examples are:
The digestive system digests and processes food. It is made up of organs that
include the salivary glands, oesophagus, stomach, duodenum, ileum, pancreas and
The respiratory system is used for breathing and gas exchange. It is made up of
organs that include the trachea, bronchi and lungs.
The circulatory system pumps and circulates blood. It is made up of organs that
include the heart, arteries and veins.