1. The Angiosperm Plant Body Structure and development –Formation of embryo –Mature embryo and seed –Embryo to adult

3. The structure of the Flower

5. Fertilization detailed

7. In most angiosperms, the ovule consists of three layers of tissue: 1.Integuments - two outer layers of diploid (2N) tissue that will develop into the seed coat. 2.Nucellus - the wall of megasporangium, also diploid (2N). 3.Embryo sac - also call the megagametophyte of angiosperms, consists of only 7 cells. Contains 8 haploid nuclei in all.

9. “Polarity” -Apical- basal pattern - Radial pattern

10. Embryo development Orderly cell division Differentiation leads into two distinct parts –Embryo proper –The suspensor Before this stage is reached the developing embryo is referred to as the proembryo Becomes food nourishing component

11. Development of the embryo of a monocot (arrowhead)

12. Stage of embryo development preceding cotyledon development Globular stage- embryo proper is spherical Heart stage (dicots only)- seed leaf (cotyledon) development Torpedo stage- apical basal pattern just prior to germination

13. Pre Globular stage- proembryo

15. Embryo proper will become - meristemic tissue Future Epidermis Future Ground meristem (ground) and Procambium (vascular)

19. Forms the seed coat

20. Twin embryo development- embryo proper limits the dev of suspensors

22. (Precursor to vascular)

24. (nucellar tissue) (Embryonic root)

25. Lets look at Seed of some common dicots and monocots Garden bean Castor bean Onion Maize

30. Mature grain or kernel of Wheat Monocot or dicot? Grass embryo

31. Protective layer of radicle and plumule -First bud of radicle