1 (L7) (b) (i) a line which continues to rise or • two lines from any box will not gain a mark remains horizontal after day 28 3 accept a line rising or remaining horizontal (b) any one from: after day 1 brightly coloured (petals) / large petals • smell or perfume 1 (L7) • (ii) any one from nectar • menstruation stops • 1 accept embryo or foetus or baby needs a (c) pollen tube grows down style / into ovule ‘the blood 1 supply’ pollen nuclei fuse with / fertilise is insufficient ‘provides support’ 1 so the ovum or embryo will implant • egg cell nucleus (to form embryo) accept lining is not ‘the shed’ 1 1 (L7) and endosperm nuclei (to form seed) [5] 1 [8] M20.(a) Mark Scheme
1 (L7) (b) (i) • a line which continues to rise or remains horizontal after day 28 accept a line rising or remaining horizontal after day 1 1 (L7) (ii) any one from • menstruation stops accept ‘the embryo or foetus or baby needs a blood supply’ ‘provides support’ is insufficient • so the ovum or embryo will implant accept ‘the lining is not shed’ 1 (L7) [5] M20.(a) two lines from any box will not gain a mark 3 (b) any one from: • brightly coloured (petals) / large petals • smell or perfume • nectar 1 (c) pollen tube grows down style / into ovule 1 pollen nuclei fuse with / fertilise 1 egg cell nucleus (to form embryo) 1 and endosperm nuclei (to form seed) 1 [8] Mark Scheme