Chapter 36

Chapter 36 - Chapter 36 (Reproduction in Flowering Plants)...

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Chapter 36 (Reproduction in Flowering Plants) Flowering Parts Sepals Cover and protect flower parts in bud Petals Attract animal pollinators to flower Stamens Produce pollen grains Each stamen consists of A think stalk (filament) Attached to a saclike structure (anther) Carpel Female reproductive unit Pistil A single carpel or group of fused carpels Each Pistil has 3 sections: Stigma, where pollen grains land Style, through which pollen tube grows Ovary, containing one or more ovules Pollen Pollen forms within pollen sacs in anther Each pollen grain contains 2 cells 1 generates two sperm cells 1 produces a pollen tube through which sperm cells reach the ovule Eggs Structures formed in the ovule: 1 egg 2 polar nuclei Several other nuclei Egg and polar nuclei participate in fertilization Pollenating Agents Insects Birds Mammals Wind Flowers make large amounts of pollen Have smaller petals or no petals No scent or nectar Coevolution Reciprocal adaptation 2 species (flowering plant, animal pollinator) form interdependent relationship
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Chapter 36 - Chapter 36 (Reproduction in Flowering Plants)...

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