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19 Cards in this Set
- Front
- Back
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accessory pigment
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pigments such as carotenoids and xanthophylls which expand the range of light wavelengths organisms can use during photosynthesis
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blade:
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leaf-like structures in seaweeds which provide extensive surface area for photosynthesis
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convergent evolution
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the process by which unrelated organisms that occupy similar environments evolve similar functional traits
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diatom
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microscopic marine protists which are encased in silica, are estimated to be responsible for 20% of the earth’s carbon fixation
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diatomaceous earth
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consists of microscopic fragments of glass from diatom encasements; humans use diatomaceous earth for fertilizers, additives to animal feeds, etc.
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heteromorphic
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a type of alternation of generations in which the haploid and diploid stages exhibit different forms.
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holdfast
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secures seaweed to a substrate
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hyphae
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structures formed by multicellular oomycetes which are similar in function to fungal hyphae.
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isomorphic
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refers to the life cycle of an organism which alternates between haploid and diploid forms that are structurally similar
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kelp
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refers to giant seaweeds that grow in the deeper waters outside of the intertidal zone. All kelps, which form vast "forests" that support thriving marine ecosystems, are phaeophytes.
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lichen
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a symbiotic association between fungi and terrestrial green algae.
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oomycete
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water molds and downy mildews of the Phylum Oomycota
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phycobilin
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a pigment in red algae which produce rich shades of pink, scarlet, and red that are so deep that they approach black.
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phycoerythrin
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a type of red phycobilin in red algae which allow rhodophytes to photosynthesize at depths where only high-energy blue and green light can penetrate.
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psuedopodium (pl. pseudopodia):
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psuedopodium (pl. pseudopodia):
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seaweed
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some members of the kingdoms Rhodophyta and Chlorophyta and Phylum Phaeophyta; although not a scientific term, “seaweed” is a useful word for distinguishing large intertidal algae from other species (e.g., planktonic algae).
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silica
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glass-like material in which diatoms are encased.
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stipe
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the part of a seaweed which is analogous to the stem of plants
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thallus:
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the entire body of any seaweed that is plant-like in appearance
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