1. Kingdom Plantae Seed Plants Mr. Skirbst Life Science Topic 15

2. Seed Plants

3. -Do not require standing water to reproduce

4. Seed Plants -Do not require standing water to reproduce -Encase young plants to protect & feed

5. Seed Structure Consists of: 1- seed coat 2- young plant (embryo) 3- stored food (cotyledon)

6. Cotyledon Monocot – one cotyledon Dicot – two cotyledons

7. Reproductive Structures ovule -

8. Reproductive Structures ovule – female structure containing egg cells pollen -

9. Reproductive Structures ovule – female structure containing egg cells pollen – male structure containing sperm cells (often with spikes on surface)

10. Types of Plants gymnosperms -

11. Types of Plants gymnosperms – “naked” seeds (not covered by ovary)

12. Types of Plants gymnosperms – “naked” seeds (not covered by ovary) cones – location of reproductive structure (ex. Pine trees)

13. Types of Plants angiosperms– seed contained in “vessel” (seeds covered by ovary)

14. Types of Plants angiosperms– seed contained in “vessel” (seeds covered by ovary) flowers – location of reproductive structures (a.k.a. flowering plants)

15. Gymnosperms 4 phyla:

16. Gymnosperms 4 phyla: 1- cycads – tropical, palmlike

17. Gymnosperms 4 phyla: 1- cycads – tropical, palmlike 2- ginkoes – ornamental (seeds stink!)

18. Gymnosperms 4 phyla: 1- cycads – tropical, palmlike 2- ginkoes – ornamental 3- conifers – cone-bearing, evergreen (like pine)

19. Gymnosperms 4 phyla: 1- cycads – tropical, palmlike 2- ginkoes – ornamental 3- conifers – cone-bearing 4- gnetophytes – blended characteristics of gymno & angiosperms

20. Angiosperms -Largest plant group in the world

21. Angiosperms -Largest plant group in the world -Also called “flowering” plants

22. Flowers -Contain the reproductive organs

23. Flowers -Stamen (male)

24. Flowers -Pistil (female)

25. Tropism -A plant’s response to a stimulus

26. Tropism -A plant’s response to a stimulus Response – a reaction to a stimulus

27. Tropism -A plant’s response to a stimulus Response – a reaction to a stimulus Stimulus – something causing a reaction

28. 2 Types of Tropism 1- Phototropism -

29. 2 Types of Tropism 1- Phototropism – a plant’s response to light

30. 2 Types of Tropism 2- Gravitropism -

31. 2 Types of Tropism 2- Gravitropism – a plant’s response to gravity

32. Tropism Positive tropism – response toward a stimulus

33. Tropism Positive tropism – response toward a stimulus Negative tropism – response away from a stimulus