Fruits and seeds

Raspberries and Blackberries

Aggregate-Accessory Fruit

• Strawberries also contain accessory tissue
• Seeds on the surface are actually separate achenes on enlarged, fleshy receptacle

Fruit Types III: Multiple fruits

• Result from the fusion of ovaries from many separate flowers on an inflorescence
• Figs and pineapples are examples of multiple fruits

one of many ovaries that

are fused together

Seed Structure and Germination

Seeds

• Develop from the fertilized ovules
• Include an embryonic plant and some form of nutritive tissue within a seed coat
• Because of the stored nutrients many seeds are valuable foods

Dicots and monocots

• Refers to the number of seed leaves or cotyledons present in the seed
• Dicot seeds have two cotyledons
• Monocots have one cotyledons

Dicot seed

• Cotyledons attached to and enclose the embryonic plant
• Cotyledons occupy the greatest part of the seed
• Cotyledons have absorbed the nutrients from the endosperm which may be entirely used up