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Download SECTION 2 - Florida Union Free School District
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Transcript
SECTION 2 SEEDLESS REPRODUCTION Importance of spores Use spores to reproduce In sporophyte stage, sex cells are produced in spore cases Spores are released and spread by wind, water, and animals becoming new plants Can be from vascular or nonvascular plants Nonvascular seedless plants Mosses, liverworts and hornworts Life cycle similar to sexual reproduction Moss lifecycle Plant looks green – (gametophyte stage). produces sex cells Moss looks brownish – (sporophyte stage). grows little stalks Tip of stalks contains spores for making new moss Nonvascular plants and asexual reproduction Pieces of plants (cuttings) can grow into new plants and form sex cells Vascular seedless plants and fern life cycle Most are ferns and have fronds as leaves Grow from a rhizome which can form new plant asexually Roots grow from rhizome Produce spores in sori, located on underside of frond Spores grow into a green, heart shaped prothallus that has chlorophyll
