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Ch.28 +30 Plant Structure, Growth and Angiosperm Reproduction (Secondary…
Ch.28 +30 Plant Structure, Growth and Angiosperm Reproduction
Plant Organs
Stems
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Function is to elongate and orient the shoot that maximizes photosynthesis by the leaves; also elevated reproductive structures
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Leaves
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responsible for photosynthesis, gas exchange, heat dissipation, and defense against pathogens and herbivores
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Leaves have adaptions such as support, protection, storage, or reproductions
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Roots
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organ that anchors the vascular plant in the soil, absorb minerals and water, and stores carbohydrates
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terrestrial plants may have mycorrhizal relationships with fungi to increase plant's ability to absorb materials
Major Tissues
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Ground
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contains cells that function in photosynthesis, short distance transport, storage, or support (not just filler)
Dermal
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Non-woody plants containing epidermis and cuticle, and woody plants containing periderm
Primary Growth
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Non-woody plants
have epidermis- tightly packed cells and cuticle- waxy coating on epidermal surface to prevent water loss
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Secondary Growth
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Cork Cambium
tissue that is part of epidermis; responsible for secondary growth and replaces the epidermis in roots and stems
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