2 Types of Seed Plants

1. 2 Types of Seed Plants • Angiosperms • Gymnosperms

2. Gymnosperms • Have cones for reproduction instead of flowers • 4 Types • Cycad • Ginkgo • Conifer • Gnetophyte

3. Gymnosperms • Cycads: look like ferns except they have seeds • Ginkgo: very large trees found mainly in China

4. Gymnosperms • Conifers: seeds are in cones or berrylike structures • Gnetophytes: shrubs and climbing vines

5. Angiosperms • Largest group of plant in the world • Found in all types of climates • Produce flowers for reproduction

6. Monocot vs. Dicot • Angiosperms are divided into monocots and dicots • As the zygote grows into the embryo, the first leaves of the young plant develop and are called cotyledons (seed leaves) • Monocots have one cotyledon (corn, lily, etc). • Dicots have two cotyledons (bean, oak, etc).

7. Monocot vs. Dicot • Number of cotyledons: one vs. two

8. Monocot vs. Dicot • Leaf venation pattern: • Monocot is parallel • Dicot is net pattern

9. Monocot vs. Dicot root • Monocot: Fibrous root • Dicot: Tap root

10. Monocot vs. Dicot • Flower parts: • Monocot: in groups of three • Dicot: in groups of four or five

11. Monocot vs. Dicot • Vascular bundle position: • Monocot: scattered throughout the stem • Dicot: arranged in a circle

12. Monocot vs. Dicot • Stem types: • Monocot: Herbaceous • Dicot: herbaceous or woody

13. Summary: Monocot vs. Dicot

14. Comparing Monocots vs. Dicots