Study the diagram given below and match the structure with its function:

(a) Placenta - Allows diffusion of glucose from maternal blood into foetal blood

(b) Umbilical cord - A tube-like structure that transports substances to and from the foetus

(c) Amnion - Protective membrane surrounding the foetus

(d) Amniotic fluid - Cushions the foetus and absorbs mechanical shocks

(e) Cervix - Site of fertilisation