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Life cycles of mosses and ferns
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Life cycle of mosses andferns
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Aim of lessonExplain the features of asexual and sexual generations as in
mosses and ferns
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Key termsSporophyte - the form of a plant in the alternation of
generations that produces spores
Gametophyte - the sexual form of a plant in the alternation
of generations
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Life cycle of plantsPlant life begins with germination of spores.A spore grows
into a gametophyte, an organism which produces gametes.
Gametes are fertilized and become sporophyte, an organism
which produces spores.
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Mosses7.
Mosses - are plants which don’t have flowers and seeds. Theylack transport system, so they absorb water by the whole
body.
Sporangium - capsule where spores are formed
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Ferns10.
Ferns are also spore-bearing plants. But have vasculartissue.
Ferns sporangia are located under leaves
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Ferns sporangia are located under leaves12.
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In mosses gametophyte plant is dominant, in ferns sporophyteplant is dominant.