growth

• What is growth?

  an increase in size or mass of an organism
• Compare the growth of plants with animals in a chart

  -growth in plants is continuous

  -growth in animals starts off slow, then fast and eventually stops
• How does growth occur in animals?

  size increase is caused by cell division and differentiation
• Where does growth occur in animals?

  new cells can be made by most cells and tissues
• How does growth occur in plants?

  size increase caused by elongation of cells and cell division and differentiation
• Where does growth occur in plants?

  mainly at shoot and root tips and in special growth zones called meristems
• What is a meristem?

  the zone of cell division in plants
• Cell division

  -when a cell divides by mitosis to produce new body cells for growth and repair

  -takes place in both plant and animal cells
• Differentiation

  -a process in which stem cells differentiate to become a specialised cell

  -takes place in both animal and plant cells
• Elongation

  -when a cell becomes longer or expands and so increases in size

  -only happens in plant cells