Plant Reproduction They can have fun too!!!!

I. General plan of alternation of generations A.Meiosis occurs in sporangia B.Spores released C.Independent haploid generation grows D.Possesses specialized tissues 1.Antheridia 2.Archegonia

E. Fertilization occurs in the archegonium F. Zygote forms G. Grows by mitosis into mature diploid plant H. Sporangia develops someplace Meiosis occurs in sporangia producing spores

II.Mosses A.Bryophytes –1. no true plant organs –2. no true tissues –3. traps water like a sponge –4. cannot grow very tall

B. Moss reproductive cycle 1. meiosis 2. protonema 3. gametophyte generation 4. archegonium 5. antheridium 6. fertilization 7. zygote 8. sporophyte generation 9. sporangia

Moss Life Cycle

Moss sporophyte generation

Assorted moss plant parts

III. Fern reproductive cycle A. General plant characteristics –1. true vascular tissue –2. rhizomes –3. separate sporophyte and gametophyte generations –4. dominant sporophyte generation

B. Fern reproductive life cycle

Fern sporangia

Fern sporangium em

Fern Gametophyte-Thallus

Fern Antheridia

Fern Archegonia

Fern Antheridia

Fern Sperm

Fern gametophyte with young sporophyte

Young sporophyte