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WARM UP “A weed is but an unloved flower.” –Ella Wheeler Wilcox 1. What does this mean to you? 2. How does this apply to plants and reproduction? Seed Development and Germination Ovules • Ovule has an embryo, endosperm, and coverings – Gets nutrients from plant Seeds • When coverings thicken and seal, food is stored and seed is formed. – Seed coat, endosperm, embryo Seeds • Cotyledons – Part of the embryo that absorbs nutrients from endosperm so growth can occur Fruit • Ovary ripens as ovule develops • Eventually, fruit surrounds seeds Fruit Types • Dry Fruits – Legume – Achene – Nut – Samara – Caryopsis • Fleshy Fruits – Drupe – Hesperidium – Pepo – Pome – Aggregate – Multiple Fruit Types Germination • Seeds take in water, swell, and rupture – Seed coat broken by scratching, freezing, fire, etc. • More oxygen, more cell division • Primary root emerges 1st, then shoot WRAP UP • Name 3 “vegetables” that are actually fruits. • Name 3 vegetables that are truly vegetables.