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PLANT PLAN

PLANT PLAN. Angiosperms. Flowering plants Review: seed -> * embryo hypocotyls -> leaves epicotyls -> shoot radical -> primary root s hoots -> * stems, * leaves, and * flowers Primary root -> * secondary root Sporophyte 2n. More information on cells. Cell division (mitosis) 2n

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PLANT PLAN

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  1. PLANT PLAN

  2. Angiosperms • Flowering plants • Review: seed -> *embryo • hypocotyls -> leaves • epicotyls -> shoot • radical -> primary root • shoots -> *stems, *leaves, and *flowers • Primary root -> *secondary root • Sporophyte 2n

  3. More information on cells • Cell division (mitosis) 2n • New Cells : produced in the meristems • Shoot meristem (tip of shoot) meristematic region pushed up • Root meristem meristematic region pushed down • Other meristems • Cell Differentiation • One divides into two • Cell elongation

  4. More information on cells cont. • Maturation of cells (specialization) • Vascular tissue • Xylem cells (HOH conduction) • vessel members • tracheids • Phloem cells (food conduction [produced in the leaves]) • Sieve – tube membranes • Companion cells • Other tissue epidermis, cortex, bark, others

  5. Organs • Vegetative organs • Roots: anchorage, absorption. conduction, and storage • Stems: production and support of leaves and flowers, conduction, and storage • Leaves: photosynthesis (food production), conduction, and storage • Reproductive organs • Sexual: flowers (exchange genetic material) • Asexual: tubers, runners, bulbs, corms (no exchange of genetic material)

  6. Stages of growth, development and reproduction (life phases) • Seed • Germination -> seedling • Vegetative growth (roots, stems, and leaves) • Food production and storage • Asexual reproduction • Sexual reproduction (flowers, fruits, and seeds) • Senescence old age to death

  7. Types of life patterns • Annual: full life span in one growing season (seed to seed to senescence) • Biennale: full life span in two consecutive growing seasons • First year vegetative growth and food storage (carrot) • Second year vegetative growth and sexual reproduction (fruit and seeds) • Perennial: lives and reproduces sexually for many growing seasons (Oak tree or oldest pine 6000 years)

  8. Indeterminate growth

  9. Determinate growth

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