2Biology – Biodiversity
Biodiversity:
1. Biosphere: Subsystem made up of all life forms and
environments;
2. Ecosystem: Biotic comunity; physical environment (biotope);
relation between organisms (biotic relations) and relation with
the environment (abiotic
relations);
3. Comunity: Set of different
species;
4. Population: Set of the same
specie;
5. Specie;
6. Organism;
7. Organ;
8. Tissue;
9. Cells;
10. Molecules;
11. Atom.
Intraspecific interactions:
Between the same specie;
Interspecific interactions: Between different species.
Organisms can be qualified as:
- Producers: Plants, seaplants, everything that uses the solar energy
or other forms of energy to synthesize organic matter from mineral or
inorganic matter – Photsynthetic beings.
- Consumers: animal or protozoa, they use other organisms as a
source of organic matter – because they can’t produce organic matter
from inorganic matter.
- Decomposers: fungi/bacteria degrade organic matter (corpses,
food remains/leaves). Releasing mineral substances resulting from the
degradation of organic matter into the environment, these will be
used by producers.
