1. 21.1 Plant Cells and Tissues Reproductive Adaptations Contribute to Angiosperm Success Anatomy of a Typical Flower 20.1

2. 21.1 Plant Cells and Tissues Adaptations: Sepals Petals Stamen Carpal/Pistil 20.1 Reproductive Adaptations Contribute to Angiosperm Success

3. 21.1 Plant Cells and Tissues Adaptations Double Fertilization –Embryo –Endosperm Seeds –Seed coat –Embryo –Cotyledon 20.1 Embryo

4. 21.1 Plant Cells and Tissues Asexual Reproduction In Angiosperms Vegetative Reproduction: dropped stems or shoots that establish new roots and become clones. 20.1

5. 21.1 Plant Cells and Tissues KEY CONCEPT Plants have specialized cells and tissue systems. 20.2

6. 21.1 Plant Cells and Tissues A Plant’s Roots and Shoots System Root system –Fibrous Root vs Tap Root Shoot system –Stems 20.2

7. 21.1 Plant Cells and Tissues –provides support –stores materials in roots and stems –Photosynthesis (in the shoot) Ground tissue is found inside a plant. Plant organs are made of three tissue systems. Dermal tissue covers the outside of a plant. –protects the plant –secretes cuticle of leaves –forms outer bark of trees 20.2 stem leaf root Tissue Types #1 & #2

8. 21.1 Plant Cells and Tissues –xylem transports water and minerals –phloem transports photosynthetic products (sugar) Vascular tissue: hollow tube shaped, used for transport 20.2 Tissue Type #3

9. 21.1 Plant Cells and Tissues Plant tissues are made of three basic cell types. Parenchyma cells are the most common plant cell type. –store starch, oils and water –Photosynthesis and Cellular Respiration –help heal wounds to the plant –have thin flexible walls & large central vacuole 20.2 Cell Type #1

10. 21.1 Plant Cells and Tissues –they are strong and flexible. –celery strings are strands of collenchyma. –they have unevenly thick cell walls. Collenchyma cells provide support to a growing plant. 20.2

11. 21.1 Plant Cells and Tissues –second cell wall hardened by lignin –die when they reach maturity –used by humans to make linen and rope Sclerenchyma cells are the strongest plant cell type. 20.2