(a(i))[1]
Explain what the term producer means.
(a(ii))[1]
Explain what the term food chain means.
(b)[4]
The diagrams illustrate a pyramid of numbers and a pyramid of biomass for a sycamore tree. Explain how the two pyramids have different shapes.
(c)[2]
Sycamore trees bear flowers that are insect-pollinated. Suggest two features of flowers which adapt them for insect-pollination.
(d)[1]
State which type of cell division produces pollen grains.