copyright cmassengale Seeds and Fruits Types & Dispersal copyright cmassengale
copyright cmassengale Seeds and Fruit Fruits are formed by seed plants to aid in dispersing seeds A seed contains the developing plant embryo in a protective coat (testa) Seeds form from ovules fertilized in the ovary Ovaries with seeds ripen into dry or fleshy fruits copyright cmassengale
copyright cmassengale Parts of a Seed External seed coat or testa Developing plant embryo Stored food called endosperm Seeds may be in one part (monocot) or two parts (dicots) DICOT MONOCOT copyright cmassengale
copyright cmassengale Parts of a Seed copyright cmassengale
copyright cmassengale Gymnosperm Seed A single fertilization produces the diploid (2n) embryo The food source is the haploid megagametophyte copyright cmassengale
copyright cmassengale Flowering plant seed In angiosperms (flowering plants) there is DOUBLE _______________ Which produces a diploid ________(2n) and, A triploid (3n) __________ Endosperm is the food source copyright cmassengale
copyright cmassengale Dicot vs. monocot seed Dicot has two cotyledons (like bean) Endosperm (food) is kept in the _________ Monocot has one __________ which absorbs the endosperm tissue during germination (corn) copyright cmassengale
copyright cmassengale Fruit In flowering plants – Fruit is a mature, ripened o_____ that contains the seeds Pericarp – the ovary wall ovary Fruit types A. Simple B. Aggregate C. Multiple copyright cmassengale
copyright cmassengale A. Simple fruit A. Simple fruit – develops from a ______ ovary of a single flower. Simple fruits can be either fleshy or dry when mature Simple fleshy fruit 1. __________ 2. _________ copyright cmassengale
copyright cmassengale Simple fleshy fruit 1. Berry – entire fruit wall is soft and fleshy at maturity. Inside is slimy. For example, grapes, tomato, etc. 2. _______________ is a berry with tough, leathery rind (peel) Examples: oranges, lemons, other citrus. copyright cmassengale
Simple fleshy fruit: drupe 3. _______ type – outer part of fruit wall is soft and fleshy, inner part is hard and stony For example: ______________________ copyright cmassengale
Simple fleshy fruit: pepo 4. ________ – also a fleshy fruit with a tougher outer rind All member of the squash family: pumpkin, melons, cucumbers copyright cmassengale
Simple fleshy fruit: pome 5. Pomes: most of the fleshy part of pomes develops from the enlarged base of the perianth (corolla and calyx) that has fused with the ovary wall Pomes include ___________________ copyright cmassengale
Simple dry fruit: capsule Simple dry fruits are dry (not fleshy) at maturity. Simple dry fruits that open at maturity include: capsules and legumes Capsule – fruit is dry at maturity and splits open along several seams Example: Cotton copyright cmassengale
Simple dry fruit: Legumes Legumes are dry at maturity and split open along _______ seams Examples: pea pods, bean pods, peanut copyright cmassengale
copyright cmassengale Simple dry fruits Simple dry fruits that do NOT open at maturity include Caryopsis: seed coat is fused to the ovary wall (cereal grains like ____________________) Nuts: single-ovary wall and seed coat remain separate, ovary wall is very hard (acorns) copyright cmassengale
copyright cmassengale B. _____________ __________ fruit develops from one flower with many separate pistils/carpels, all ripening simultaneously Examples: strawberry, raspberries, blackberries copyright cmassengale
copyright cmassengale C. Multiple fruit Multiple fruit develops from ovaries of several flowers borne/fused together on the same stalk For example: ____________ copyright cmassengale