growth in plants

what ate meristems

group of cells near the end of each shoot and root that allow plants to grow throughout their lives

how do meristems divide?

they divide rapidly by mitosis

what happens to the cells produced in meristems

they increase in length (elongation) and differentiate into specialised cells

describe how xylem vessels are specialised to carry out their function of carrying water throughout the plant

• they have a thickened wall to withstand water pressure

• they have tiny pores in this wall to allow water and mineral salts to enter and leave the vessel

• it has no cytoplasm so the vessel is empty

how to work out percentage change

((final value - starting value) / starting value ) * 100

explain why meristem cells have many ribosomes

meristem cells are actively dividing and growing. growth and repair requires proteins - ribosomes are the site of protein synthesis