Mammoth Memory

Growth

Plants:

a) grow by increasing the number of cells

b) and by cell enlargement (increase in cell size).

c) They often carry on growing continuously 

(As previously mentioned under Sensitivity, plants know which way to grow – roots downwards, green shoots upwards – because they are sensitive to gravity. But plants can also direct their growth in response water and light – roots towards moist areas of soil, and green shoots towards the sun.

Graphic showing the growth of a plant but plants keep growing

 Animals:

 a) Grow by increase in number of cells

 b) Tend to grow to a maximum size then stop (although cells are continuously being replaced)

 image of 2 dogs that show animals grow but stop when they meet there maximum size.

More Info