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Published byOscar Martin Modified over 8 years ago
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Structures of Angiosperms (Flowering Plants)
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Vascular Tissue (Plumbing) Xylem (moves water + nutrients) Xylem (moves water + nutrients) Phloem (moves food) Phloem (moves food) Both are found in roots, stems & leaves Both are found in roots, stems & leaves
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Roots supplies water & nutrients supplies water & nutrients anchors the plant anchors the plant stores extra food stores extra food types: types: Taproot System Taproot System Fibrous System Fibrous System electron micrograph of soybean root hairs
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Stems support the plant body support the plant body transport materials transport materials some store materials some store materials types types herbaceous stem herbaceous stem woody stem woody stem
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Leaves to make food for the plant through photosynthesis to make food for the plant through photosynthesis
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Leaf Structures
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Photosynthesis Sunlight captured by chlorophyll helps to make glucose (sugar). Food for plant. Sunlight captured by chlorophyll helps to make glucose (sugar). Food for plant. oxygen is given off oxygen is given off Carbon Dioxide + Water + Sunlight Sugar + Oxygen
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Cellular Respiration plant cells use oxygen to produce energy from glucose to survive plant cells use oxygen to produce energy from glucose to survive Extra glucose is converted & stored as starch Extra glucose is converted & stored as starch
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Flowers adaptation for sexual reproduction adaptation for sexual reproduction Helps plants reproduce Helps plants reproduce humans use in products humans use in products (spices, perfumes, lotions) food source food source (broccoli, cauliflower, artichokes)
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Flower Structure
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Sexual Reproduction (Pollination & Fertilization)
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Steps of Sexual Reproduction 1. Pollination: pollen moves from the anther (male) to the stigma (female) 2. A pollen tube grows to the ovule 3. Fertilization: sperm & egg fuse in the ovule
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Steps of Sexual Reproduction 4. Ovule develops into a seed 5. The ovary around the ovule becomes a fruit (protects & helps spread the seed) 6. Under favorable conditions, the seed germinates (sprouts).
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Seed Production
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From Seed to Plant
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Plant Responses to the Environment
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Plant Tropism Tropism: movement of plant in response to its environment Tropism: movement of plant in response to its environment positive tropism: growth toward a stimulus positive tropism: growth toward a stimulus negative tropism: growth away from a stimulus negative tropism: growth away from a stimulus Examples: Examples: Phototropism: (response to light) Phototropism: (response to light) Gravitropism: (response to gravity) Gravitropism: (response to gravity)
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Seasonal Responses Length of Day Length of Day Plants that reproduce in fall or winter are called short-day plants Plants that reproduce in fall or winter are called short-day plants Plants that reproduce in spring or summer are called long-day plants Plants that reproduce in spring or summer are called long-day plants
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Limiting Factors of Plants (limits plant growth) Sunlight Sunlight Water / Moisture Water / Moisture Nutrients Nutrients Temperature Temperature Seed Depth Seed Depth pH of Soil pH of Soil
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