Types of Fruit

Classification of Fruits

  • Development of Carpals: Fruits are classified based on how carpals (chambers within the ovary) develop.

    • Single Chamber: Simple fruits develop from one carpal.

    • Multiple Ovaries: Ovaries can be either connected or separate.

Types of Fruits

  • Fleshy vs. Dry: Fruits can be fleshy or dry based on the texture of the fruit wall (cell wall).

    • Dry Fruits:

    • Dehiscent: Open to release seeds.

    • Indehiscent: Do not open to release seeds.

  • Synonyms for Fruit Types:

    • All flowering plants produce some form of fruit, which can often be mistaken for seeds in botanical contexts.

Classification Table

  • Main Categories:

    • Dry Dehiscent

    • Dry Indehiscent

    • Fleshy

    • Accessory Fruit

    • Aggregate Fruit

Examples of Fruit Types

  • Simple Fruit:

    • Develops from a single carpal or syncarpous gynoecium.

    • Example: Apricot (one seed), Tomato (multiple seeds).

    • Pericarp Layers:

    • Exocarp: Outer layer (skin).

    • Mesocarp: Fleshier layer beneath the skin.

    • Endocarp: Inner layer surrounding the seed.

    • Placenta: Attachment point within the fruit where seeds are connected.

  • Aggregate Fruit:

    • Develops from an apocarpous gynoecium (multiple free carpals).

    • Example: Raspberry

    • Each segment (drupe) corresponds to a separate fruit from an individual carpal, sharing a common receptacle.

  • Multiple Fruit:

    • Formed from an inflorescence, a structure that bears many flowers on a single stem.

    • Example: Pineapple, Fig

    • Pineapple shows clustered fruits, while Figs mature from flowers developing inside the stem.

    • Fig wasp plays a crucial role in pollination; after pollination, they die and are digested.

Important Notes

  • Raspberry: Each lumpy piece is an individual drupe, making rasberries technically aggregate drupes, not berries.

  • Fig: The internal structure allows flowers to mature into fruits inside the stem, needing pollination from fig wasps for wild varieties.

  • The seeds you feel when consuming figs are the actual seeds, not the remains of the fig wasp, which is digested.