1. Plant Reproduction: Seed Plants

2. Table of Contents DateAssignmentVocabularyPage 11/28/12Seed Plants10

3. Review- What are the two main types of plants? Non- Vascular – Lacking vascular tissue – Live in moist areas – Examples- mosses, liverworts, hornworts Vascular – Have vascular tissue to move water and nutrients through – Two types: seedless and seed plants

4. How is it all related? Have spores Have seeds

5. Brain Pop- Seed Plants As you watch the video, listen for the characteristics of each type of seed plant.

6. Set up your page like this… GymnospermsAngiosperms

7. Seed Plants Seed plants reproduce sexually – Fertilization from male and female sex cells Two types: – Gymnosperms E.g. Pine trees with cones – Angiosperms E.g. Most have flowers

8. Gymnosperms Means ‘naked seed’ = needs the cone to protect it! Cones are the reproductive structures on gymnosperms and each species has a different type of cone Male and female cones are produced on the same plant: – Female cones have ovules, which contain the egg cells – Male cones develop pollen grains, which contain sperm cells

9. Gymnosperms continued… Male cones release a cloud of pollen Wind usually carries the pollen to the female cone The pollen is trapped by a sticky substance and develops into a pollen tube – Grows towards the ovule and sperm can fertilize the egg cell – Can take 15 months!

10. Gymnosperms…there’s more! After fertilization, an embryo forms and develops into a seed When female pine cones mature, they open and release their seeds – These can be carried away, or are eaten or buried by animals Buried seeds may grow into new pine trees!

11. Angiosperms All produce flowers Can be brightly colored or have a nice smell to attract animals – Animals like birds (hummingbirds) or insects (bees) can help spread pollen to other flowers When pollen from the stamen lands on the stigma, this is called pollination – The same process occurs in gymnosperms, where a pollen tube grows into the ovule and eventually a seed will develop)

12. Angiosperm or Gymnosperm? 1. 2. 3.

13. Angiosperm or Gymnosperm? 1. 2. 3.