Plant Reproduction They can have fun too!!!!. I. General plan of alternation of generations...
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Transcript of Plant Reproduction They can have fun too!!!!. I. General plan of alternation of generations...
I. General plan of alternation of generations
A. Meiosis occurs in sporangia
B. Spores released
C. Independent haploid generation grows
D. Possesses specialized tissues1. 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
III. Fern reproductive cycle
• A. General plant characteristics– 1. true vascular tissue– 2. rhizomes– 3. separate sporophyte and gametophyte
generations– 4. dominant sporophyte generation