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Vascular Seeded Plants

Vascular Seeded Plants. What is a Seed Plant?. 1. Characteristics of seed plants: Have Vascular Tissue Use pollen and seeds to reproduce. What is a Seed Plant?.

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Vascular Seeded Plants

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  1. Vascular Seeded Plants

  2. What is a Seed Plant? • 1. Characteristics of seed plants: • Have Vascular Tissue • Use pollen and seeds to reproduce

  3. What is a Seed Plant? • 2. In seed plants, the plants that you see are in the sporophyte stage of the life cycle. The gametophyte stage is microscopic.

  4. What is a Seed Plant? • 3. How does vascular tissue help seed plants on land? • Standing upright • Transporting materials

  5. 4. Vascular Tissue A. Phloem B. Xylem Transports water • Transports food

  6. Seed Plant • 5. Seed plants use pollen to transport the sperm cells. • 6. Pollen: Tiny structures that contain the cells that will later become sperm cells.

  7. Transporting Pollen

  8. Seed Plant • 7. Seeds: Structure that contains a young plant inside a protective covering. • Protection from drying out • 8. All seeds… • Contains a partially developed plant • When conditions favorable, plant sprouts and grows

  9. Seed Plant Parts of a Seed

  10. Parts of a Seed

  11. Seed Dispersal • 10. Seeds can be dispersed by: • Other organisms • Water • Wind • Ejection

  12. Germination • 11. Germination: Occurs when an embryo begins to grow and pushes out of a seed. • 12. Once you see a plant’s leaves, it’s called a seedling.

  13. Roots • 13. Function of roots: • Anchors plant • Absorb water and minerals • Stores food • 14. Two types: • Tap • Fibrous Fibrous Taproot

  14. Stems • 17. Functions of stem: • Carries substances between the plants’ root and leaves • Provides support • Holds up leaves

  15. 18. Stem • Woody Stem • Hard • Rigid • Example: Maple tree • Herbaceous Stem • Contain no wood • Often soft • Example: Cone Flower

  16. Stems • 19. Annual Rings: • Pattern of circles inside a tree’s trunk • Made up a xylem • Represent a years growth

  17. Leaves • 22. Leaves capture the sun’s energy and carry out the food-making process of photosynthesis.

  18. Leaves • 24. The process by which water evaporates from a plant’s leaves is called transpiration. • 25. Plants close their stomata to keep the plant from losing water. TRUE!!!

  19. Stomata

  20. Gymnosperms The OLDEST PLants

  21. Gymnosperms • 26. A seed plant that produces naked seed. • Not covered in a fruit • Instead they have needle-like or scale-like leaves

  22. Gymnosperms • 28. All gymnosperms: • Need-like or scale-like leaves • Deep growing root systems

  23. Gymnosperms • 29. Four groups of gymnosperms that exist today: • 1. Cycads (palm tree with cones) • 2. Conifers (evergreens) • 3. Ginkgoes (Japanese and Chinese tree) • 4.Gnetophytes (deserts and tropical rainforests)

  24. Reproduction in Gymnosperms • 31. Most gymnosperms have reproductive structures called cones. • 32. Reproductive structures: • Male gametophyte: Pollen • Female gametophyte: Ovule

  25. Reproduction in Gymnosperms • 34. Life Cycle: • Pollination: Transfer of pollen from male to female • Fertilization: Sperm fertilizes egg • Seed Development: Female cones develop while seeds develop on tree. Male cones fall off after they shed theirs. • Seed Dispersal: Seeds move to a new place to grow

  26. Angiosperms • 35. All angiosperms: • Produce flowers • Produce seeds that are covered in fruit • 36. Flower: The reproductive structure an of angiosperm

  27. Parts of a Flower

  28. 39. Reproduction in Angiosperms • 1. Pollen falls on a flower’s stigma • 2. Sperm cell and egg cell join together in ovule • 3. Zygote develops and becomes the seed

  29. 42. Groups of Angiosperms • Monocots • Dicots • Based on: • Number of Petals • Veins in leaves Dicot Monocot

  30. MONOCOT vs DICOT • 43. “COT” is short for cotyledon (seed leaf) • 44. “MONO” means one • 45.”DI” means two

  31. Seasonal Changes • Phototropism: • 50. A plant’s response to seasonal changes in length of night and day is called photoperiodism. • 51. Plants differ in how they respond to the length of nights. This length is called criticallength. • TROPISM: A plants response towards or away from a stimulus.

  32. Tropism

  33. Types of Plants

  34. Dormancy • 53. Dormancy is a period when an organism’s growth or activity stops. • Helps survive freezing temperatures • Helps survive a lack of liquid water

  35. Life Spans of Angiosperms • 54. Classified on the length of their life cycles. • 55. Life Spans: • Annuals: Complete a life cycle within one growing year (Impatiens and cucumbers) • Biennials: Complete life cycle in 2 years (Celery and foxgloves) • Perennials: Live for more than 2 years (Maple trees and peonies)

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