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Plant Anatomy & Physiology

Plant Anatomy & Physiology. Parts of a Flower Foldable. Color your flower Fold your sheet in half and cut the flaps on the 1 st sheet only! Open your foldable and label it like this:. The Four Basic Parts of Plants. Flowers Leaves Stems Roots. Leaves Function. Functions

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Plant Anatomy & Physiology

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  1. Plant Anatomy & Physiology

  2. Parts of a Flower Foldable • Color your flower • Fold your sheet in half and cut the flaps on the 1st sheet only! • Open your foldable and label it like this:

  3. The Four Basic Parts of Plants • Flowers • Leaves • Stems • Roots

  4. Leaves Function • Functions • Make food through photosynthesis • Site of gas exchange • Respiration • Photosynthesis • Store food

  5. Leaf Structure-Tissues of the Leaf (Epidermis) • Cuticle • Waxy substance that covers the leaves & stems • Waterproof layer that keeps water in plants

  6. Leaf Structure-Tissues of the Leaf (Epidermis) • Stomata • Openings in the epidermis mainly located on the underside of leaves • Exchange of gases

  7. Leaf Structure-Tissues of the Leaf (Epidermis) • Guard Cells • Two cells located on each side of stomata • Open and closes stomata

  8. Stems Function • Functions • Movement of materials • Water & minerals from roots to leaves • Manufactured food from leaves to roots • Support leaves & reproductive structures • Food storage

  9. Stem Structure • Xylem • The tissue that transports water & nutrients up from roots to stems & leaves. • Phloem • Tissue that transports food down from leaves to roots. • Cambium • Thin, green, actively growing tissue located between bark & wood and produces all new stems cells.

  10. Roots Function • Functions • Anchor the plant • Absorb water & minerals • Store food • Propagate or reproduce some plants

  11. Roots Structure • Root Cap • Indicates growth of new cells.

  12. Roots Structure • Root Hairs • Tiny one celled hair-like extensions of the epidermal cells located near the tips of roots. • Increase surface area. • Absorb water & minerals.

  13. Flowers Function • Function • Contain the sexual organs for the plant. • Produces fruit, which protects, nourishes and carries seeds. • Attracts insects for pollination.

  14. Flower Structure • Sepals • Outer covering of the flower bud. • Protects the stamens and pistils when flower is in bud stage. • Collectively known as the calyx.

  15. Flower Structure • Petals • Brightly colored • Protects stamen & pistils. • Attracts pollinating insects. • Collectively called the corolla.

  16. Flower Structure (Stamen) • Within the petals are the flower’s male and female reproductive parts. • Male reproductive part • Anther • Produces pollen • Filament • Supports the anther

  17. Flower Structure (Pistil) • Female reproductive part • Ovary • Enlarged portion at base of pistil • Produces ovules which develop into seeds • Stigma • Holds the pollen grains

  18. Imperfect Flower • Male or female reproductive organs not, but not both. • Example: • A male flower has sepals, petals, and stamen, but no pistils. • A female flower has sepals, petals, and pistils, but no stamen.

  19. Perfect Flowers • Contains both male and female reproductive structures.

  20. Importance of Flowers • Important in florist & nursery businesses. • Many plants are grown solely for their flowers. • Plants have flowers to attract insects for pollination, but people grow them for beauty & economic value.

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