Botany powerpoint

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Slide 1

Botany The study of plants…

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Vascular & Nonvascular Vascular Plants Transport water & dissolved substances through the plant Nonvascular No true roots, stems, leaves No vascular tissue Ex: moss

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What is Vascular Tissue? Xylem Specialized tissue that carries water & inorganic nutrients Phloem Specialized tissue that transports food Stomata Small opening in surface of the leaf that allows gas exchange

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Vascular tissue cont. Guard Cells Controls size of stomata Cuticle Waxy protective covering on the surface that prevents water loss Epidermis Layer of cells that form the outer surface of the plant

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Place diagram in notes and Label… Epidermis Stomata Guard Cells Xylem Phloem Chloroplast

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Reproductive Parts of a Plant (Vascular) 1) Flower -The part of a plant that contains the reproductive organs 2) Stamens -The male organs of angiosperm plant 3) Pistils -The female organs of angiosperm plant

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4) Ovary -The bottom part of a pistil that produces eggs -A fruit is a mature plant ovary -The primary purpose for a fruit is seed dispersal 5) Pollen -The male sex cells of a plant 6) Seed -A plant embryo enclosed in a protective coat

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Types of Root Systems 1) Taproot -A root where the primary root is very large Example = Carrots 2) Fibrous -A system where you have numerous small roots Example = grass

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Root Hair -An extension of a root Root hairs increase the surface area of a root and thus increase the plant’s ability to absorb water and minerals

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All vascular plants can be grouped into two groups which are seed & seedless Types of Seed Plants: 1) Angiosperm -Flowering plant that produces seeds within a fruit -Two classes are monocots and dicots 2) Gymnosperms -Plant with seeds not formed inside a fruit, EX: pine tree

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Transpiration -The evaporation of water through the small openings in the surface of a leaf

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Photosynthesis Photosynthesis occurs inside chloroplasts Located in the membrane of the chloroplasts are a variety of pigments, the most important of which are called chlorophylls Why is chlorophyll important?

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Each type of chlorophyll absorbs a different color of light -Remember white light contains a variety of colors called the visible spectrum -This light that is absorbed fuels the photosynthesis reaction * Plants are green because they contain large amounts of chlorophyll, which reflects most of the green light it intercepts

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Stomata control how much carbon dioxide enters and oxygen and water leaves a plant. -Increasing levels of carbon dioxide around a plant increases the rate of photosynthesis if other conditions are met * The organic compounds (Glucose) that are made during photosynthesis are stored mainly as starch

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In pictures... Chlorophyll (pigment)

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Write the chemical equation for photosynthesis 6 CO2 + 6 H2O C6H12O6 + 6O2 Carbon water glucose oxygen dioxide

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Illuminating Photosynthesis http://www.pbs.org/wgbh/nova/methuselah/photosynthesis.html#

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Mythbusters Does talking to plants increase growth rate? Part 1: http://www.youtube.com/watch?v=CMiVNPXR5qw (watch out 4:11-ish) Part2: http://www.youtube.com/watch?v=FhsbM9LxPAk

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