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Cards In This Set
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Liverworts
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Phylum Hepatophyta
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Marchantia - Y shaped branching of Thallus
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Adaptions of Liverworts/Mosses
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Rhizoids, lack true vascular tissues, multicelluar reproductive organs, have a well extablished alternation of generations (independent gametophyte-haploid-stage) (dependent sporophyte-diploid-stage
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Marchantia
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Rhizoid
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Root like structure, that are used for absorbtion and storage of nutrients
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Rhizoid - Ventral Surface of Marchantia
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Pores
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For photosynthesis, to let in CO2 and minizes H2O loss.
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Pores - Dorsal side of Marchantia
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What structure in higher plants in morphologically and functionally similar to pores?
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Stomata
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Cross Section of Marchantia Thallus
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Upper Epidermis
Pores (J) Air Chamber (K) |
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What is the purpose of the Air Chamber?
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Recieve CO2 through pores. Gas exchange.
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Thick layer of cell under air chambers. Gelantinous substance that tends to absorb water.
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Less likely to dry out. Helps absorb and retain water.
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Gametophyte of Marchantia reproduces asexually by means of small "plantlets" .... located at the bottom of Gemma Cups
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Gemmae ( Dorsal Surface of the Thallus)
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Gemmae in Gemma Cups are splashed by falling droplets
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