BIOL 2080 Chapter Notes - Chapter 6: Conifer Cone, Photosynthesis, Grapefruit Juice
25 Mar 2016
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Chapter 6 plant life cycle: fruits and seeds. Fruits, as are flowers, are unique aspects of sexual reproduction in angiosperms; they protect the enclosed seeds and aid in their dispersal. The fruit wall that develops from the ovary wall is knows as the pericarp and is composed of three layers: the outer exocarp, the middle mesocarp, the inner endocarp. Thickness and distinctiveness of these three layers vary among fruit types. Simple fruits are derived form the ovary of a single carpel or several fused carpels and are described as fleshy or dry. When ripe, pericarp of fleshy fruits is often soft and juicy. Seed dispersal in fleshy fruits is accomplished when animals eat the fruits. Berry: thin exocarp, a soft, fleshy mesocarp, an endocarp enclosing one to many seeds, tomatoes, grapes, blueberries. Hesperdidium: a berry with a tough, leathery rind, oranges, lemons, other citrus fruits.
