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24.5: Fruits

Last updated

Jun 18, 2020
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- 24.4: Angiosperm Life Cycle
- 24.6: Using a Dichotomous Key to Identify Fruit Type

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All flowers become fruits. If you are unsure whether something is a fruit or not, check for seeds. Vegetables originally got their name for being derived from the vegetative (non-reproductive) part of the plant, such as a stem, root, or leaf.

The Pericarp

The ovary wall surrounds the developing seeds and becomes the pericarp (peri- meaning around, carp- meaning fruit or body). The pericarp is composed of three layers:

Exocarp - the outermost layer, making up the exterior surface of the fruit
Mesocarp - the tissue located between the exocarp and endocarp
Endocarp - the innermost layer, located just outside the seed coat

Figure $\PageIndex{1}$ : Diagram of a peach

In some fruits these layers are distinctly different and easy to distinguish. In other fruits, the layers are fused together and nearly impossible to differentiate. Fruit identification is primarily based on the structure of these three layers.

Contributors and Attributions

Maria Morrow (College of the Redwoods)

The Pericarp

Contributors and Attributions

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