Placentation in tomato and lemon is

Lemon or Citrus (Family-Rutaceae), tamato or Lycopersicon sp. (Family-Solanaceae), China rose or Hibiscus (Family Malvaceae) etc. have axile placentation. It occurs in multicarpellary, syncarpous ovary. Inward growth of margins of carpels forms a multicarpellary condition which contains an axis in the centre. Placentae arise from this central axis which bear ovules.