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Presentation transcript:

Headings Vocab Important Info Moss & Fern Headings Vocab Important Info

Vascular & Nonvascular Plants A. Plants which contain vessels for transport B. Xylem- vessels transporting water & minerals up to leaves C. Phloem- vessel transporting sugar down to roots D. Example-Flowers, Trees 1. Nonvascular Plants without vessels for water & mineral transport Example-Mosses

Bryophytes Nonvascular plants-Moss Small, soft plants which grow in clumps Absorbs water like a sponge Live in moist, shaded areas Height b/t 1-2 cm Pioneer plants: break down rock

LIFE CYCLE Reproduction: a. Alternate Generations: have 2 body forms in life cycle b. Gametophyte- body form which produces gametes c. Sporophyte- form which produces spores, grows from gametophyte capsule sporophyte stalk Stemlike structure gametophyte Leaflike structure

2. Steps in Reproductive Cycle Spore germinate & form gametophyte generation Antheridium- forms male gametes(sperm) Archegonium- forms female gametes(egg) Sperm fertilizes egg & zygote is formed Zygote divides and forms sporophtye

Left Page (draw later) Figure 22–11 Page 558 The Life Cycle of a Moss Mature sporophyte (2N) Gametophyte (N) Young sporophyte (2N) Zygote (2N) Sperm (N) Egg (N) Spores (N) Capsule (sporangium) Protonema (young gametophyte) (N) Male gametophyte Female gametophyte Antheridia Archegonia Haploid (N) Diploid (2N) MEIOSIS FERTILIZATION

Seedless Plants Vascular plants- have xylem & phloem Live in moist, fertile shaded areas Form fronds (large leaves) leaves Produce spores instead of seeds Fiddlehead-young fern frond

5. Reproduction: Alternate Generations sporophyte & gametophyte are independent spores released, germinate to form heart-shaped gametophyte called Prothallus d. Prothallus prod. both Antheridium & Archegonium e. Sperm released & swims through water & fertilizes egg f. Zygote is formed & dev. in Sporophyte

Left Page (draw later) Figure 22–17 Page 563 The Life Cycle of a Fern MEIOSIS Sporangium (2N) Haploid gametophyte (N) Diploid sporophyte (2N) Frond Young gametophyte (N) Spores (N) Mature sporophyte (2N) Developing sporophyte (2N) Mature gametophyte (N) Antheridium Sperm Gametophyte (N) Egg Sporophyte embryo (2N) Archegonium FERTILIZATION