photosynthetic bacteria
232
photosynthetic bacteria (syn. phototrophic bacteria) ---7photosynthesis.
phototaxis movement of an organism in which the directional stimulus is light.
Towards the light is called positive phototaxis and away from the light negative phototaxis.
phototrophs ---7metabolic diversity.
phycobilin plant pigments characteristic for Cyanobacteria (blue green algae) and
Rhodophyta (red algae). Two phycobilins exist (a) phycocyanine, which is blue
and gives the blue color; (b) phycoerythrin, which is red and occurs particularly in picocyanobacteria, small picoplanktonic algae abundant in oligotrophic blue ocean waters. ---7pigments, plants.
phylum main division within a kingdom of organisms. Example: Chordata. In
botanical books the term division is still often used instead of phylum.
phytobenthos ---7benthos.
phytodetritus ---7detritus.
phytolith stony or mineral structure, generally microscopic, secreted by a living
plant, e.g., as a defense against herbivores; often composed of calcium oxalate
or opaline silica (---7opal).
Phytomastigophora (syn. Phytoflagellata) ---7Mastigophora.
phytophagous plant -eating.
phytoplankton the whole group of (usually microscopic) floating algae. The
term refers to a functional group (floating algae) not to a systematic entity,
and is used for the autotrophic part of the plankton.
picoplankton small « 2 flm) planktonic organisms, ---7plankton.
pigments, animal any material that colors the inside or outside of an animal is
called a pigment. However, not all colors in animals are due to pigments;
some may be caused by reflections on surfaces which, unlike pigments,
absorb no part of the light, and others are due to bioluminescence. Some pigments originate from pigments of plants used as food: chlorophyll, carotene,
xanthophyll (---7carotenoids), anthoxanthin and their derivates, others come
from blood pigments or from their break-down products. Respiratory pigments (hemoglobin, hemerythrin, erythrocruorin, chlorocruorin, and hemocyanin) are used for storage and transport of oxygen in the body. Other pig-
232
photosynthetic bacteria (syn. phototrophic bacteria) ---7photosynthesis.
phototaxis movement of an organism in which the directional stimulus is light.
Towards the light is called positive phototaxis and away from the light negative phototaxis.
phototrophs ---7metabolic diversity.
phycobilin plant pigments characteristic for Cyanobacteria (blue green algae) and
Rhodophyta (red algae). Two phycobilins exist (a) phycocyanine, which is blue
and gives the blue color; (b) phycoerythrin, which is red and occurs particularly in picocyanobacteria, small picoplanktonic algae abundant in oligotrophic blue ocean waters. ---7pigments, plants.
phylum main division within a kingdom of organisms. Example: Chordata. In
botanical books the term division is still often used instead of phylum.
phytobenthos ---7benthos.
phytodetritus ---7detritus.
phytolith stony or mineral structure, generally microscopic, secreted by a living
plant, e.g., as a defense against herbivores; often composed of calcium oxalate
or opaline silica (---7opal).
Phytomastigophora (syn. Phytoflagellata) ---7Mastigophora.
phytophagous plant -eating.
phytoplankton the whole group of (usually microscopic) floating algae. The
term refers to a functional group (floating algae) not to a systematic entity,
and is used for the autotrophic part of the plankton.
picoplankton small « 2 flm) planktonic organisms, ---7plankton.
pigments, animal any material that colors the inside or outside of an animal is
called a pigment. However, not all colors in animals are due to pigments;
some may be caused by reflections on surfaces which, unlike pigments,
absorb no part of the light, and others are due to bioluminescence. Some pigments originate from pigments of plants used as food: chlorophyll, carotene,
xanthophyll (---7carotenoids), anthoxanthin and their derivates, others come
from blood pigments or from their break-down products. Respiratory pigments (hemoglobin, hemerythrin, erythrocruorin, chlorocruorin, and hemocyanin) are used for storage and transport of oxygen in the body. Other pig-