8 flowers, fruits, and seeds

8 flowers, fruits, and seeds - FLOWERS, FRUITS, AND SEEDS...

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FLOWERS, FRUITS, AND SEEDS
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Monocot vs Dicot Review Dicots v 2 cotyledons v Flower parts - 4 or 5 v Leaf veins – palmate or pinnate v Vascular cambium v Vascular bundles in ring v Pollen grain with three apertures Monocots v 1 cotyledon v Flower parts - 3 v Leaf veins - parallel v No vascular cambium v Vascular bundles scattered v Pollen grain with one aperture
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Flowers Flower Structure: (modified leaves) o originate from an axillary bud o peduncle – flower stalk (pedicels = branchlets) o receptacle – site of attachment for other floral parts
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Flowers Flower Structure: (modified leaves) o sepals – protection of reproductive organs while a bud § calyx o petals – attracts pollinators § corolla § perianth = calyx + corolla (non- reproductive parts)
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Flowers Flower Structure: o stamen – ‘male’ reproductive part § filament – stalk § anther – pollen (produced by microsporangia) o pistil – ‘female’ reproductive part § single or several fused carpels (megasporophylls) simple – 1 carpel compound – several carpels
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Flowers Flower Structure: o pistil: § stigma – terminal receptive surface § style – elongated stalk § ovary – basal portion which encloses ovules (seeds) develops into fruit position: superior or inferior
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Flowers - Structure
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Flowers Flower Position: o solitary o inflorescence – flowers clustered in groups § flowers may open at same time or in intervals
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Flowers - Inflorescences
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This document was uploaded on 10/27/2011 for the course BIO 1401 at Texas Tech.

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8 flowers, fruits, and seeds - FLOWERS, FRUITS, AND SEEDS...

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