151
holistic approach
herbivorous plant -eating, -therbivores.
hermaphrodite animal producing both male and female reproductive cells.
Heterokontophyta taxonomical group which include the algal groups Rhodophyta,
Chrysophyta, Xanthophyta, Bacillariophyta, Phaeophyta and Raphidophyta.
Heteropoda superfamily of the order Mesogastropoda, class Gastropoda (phylum
Mollusca). Holoplanktonic Prosobranchia snails with a fin-like foot used for swimming. The shell can be shaped like a flattened posthorn, a cone or is absent.
The animals have a radula and are predators. Examples: Atlanta, Carinaria.
heterotrophs organisms taking organic matter from their environment, because
they are not able to synthesize organic matter themselves as are their counterpart: the autotrophs. Heterotrophs are in general all animals and bacteria;
autotrophs are plants. -tmetabolic diversity.
Hexacorallia -tAnthozoa.
Hexactinellida (glass sponges) class of the Porifera. The marine animals have a
skeleton of basically six-rayed siliceous spicules. Sometimes these spicules are
fused to long needles. Glass sponges mainly live in the deep sea, especially
in the zone between 200 and 2000 m.
hiatus break or interruption in the continuity of the geological record. The
term indicates both (a) the geological time lapse not represented by rocks
and (b) the absence of rock units in a stratigraphic sequence of rocks (as a
result of either nondeposition or erosion).
Hirudinea (leeches) subclass of the Hirudinoidea, phylum Annelida (segmented
worms). They occur in freshwater, on land, and in the marine environment,
and only part of the ca. 500 species are ectoparasites ("blood-suckers"), the
others predacious. The body has 34 segments (subdivided into rings, called
annuli), is highly contractile and has suckers at both ends. They are hermaphrodite, eggs are laid in cocoons, and hatch without larval stage into miniature
adults.
holistic approach the idea that the phenomena in the living world are controlled
by the whole of all living organisms. In this, the whole is not merely the
addition of the parts, it has properties that cannot be explained from the
properties observed in single individuals. Famous is the Gaia hypothesis
(1979) 00. Lovelock, which states that all living species together control the
physical and chemical conditions in the hydrosphere and the atmosphere in
such a way that the circumstances remain suitable for life.
holistic approach
herbivorous plant -eating, -therbivores.
hermaphrodite animal producing both male and female reproductive cells.
Heterokontophyta taxonomical group which include the algal groups Rhodophyta,
Chrysophyta, Xanthophyta, Bacillariophyta, Phaeophyta and Raphidophyta.
Heteropoda superfamily of the order Mesogastropoda, class Gastropoda (phylum
Mollusca). Holoplanktonic Prosobranchia snails with a fin-like foot used for swimming. The shell can be shaped like a flattened posthorn, a cone or is absent.
The animals have a radula and are predators. Examples: Atlanta, Carinaria.
heterotrophs organisms taking organic matter from their environment, because
they are not able to synthesize organic matter themselves as are their counterpart: the autotrophs. Heterotrophs are in general all animals and bacteria;
autotrophs are plants. -tmetabolic diversity.
Hexacorallia -tAnthozoa.
Hexactinellida (glass sponges) class of the Porifera. The marine animals have a
skeleton of basically six-rayed siliceous spicules. Sometimes these spicules are
fused to long needles. Glass sponges mainly live in the deep sea, especially
in the zone between 200 and 2000 m.
hiatus break or interruption in the continuity of the geological record. The
term indicates both (a) the geological time lapse not represented by rocks
and (b) the absence of rock units in a stratigraphic sequence of rocks (as a
result of either nondeposition or erosion).
Hirudinea (leeches) subclass of the Hirudinoidea, phylum Annelida (segmented
worms). They occur in freshwater, on land, and in the marine environment,
and only part of the ca. 500 species are ectoparasites ("blood-suckers"), the
others predacious. The body has 34 segments (subdivided into rings, called
annuli), is highly contractile and has suckers at both ends. They are hermaphrodite, eggs are laid in cocoons, and hatch without larval stage into miniature
adults.
holistic approach the idea that the phenomena in the living world are controlled
by the whole of all living organisms. In this, the whole is not merely the
addition of the parts, it has properties that cannot be explained from the
properties observed in single individuals. Famous is the Gaia hypothesis
(1979) 00. Lovelock, which states that all living species together control the
physical and chemical conditions in the hydrosphere and the atmosphere in
such a way that the circumstances remain suitable for life.