The word ‘alga’ refers to a large and highly diverse group of photosynthetic eukaryotic lifeforms. These species are not related because they do not share a common ancestor.
Characteristics of Algae
Algae have specific general characteristics that are held by both plants and animals.
Some general characteristics of algae are mentioned below.
- All algae are Thallophytes, since they lack a well differentiated plant body.
- Algae are photosynthetic organisms
- Algae can be either unicellular or multicellular organisms
- Algae lack a well-defined body, so, structures like roots, stems or leaves are absent
- Algae grow where there is enough sunshine.
- Asexual and sexual reproduction are both possible in algae. Spore formation is used for asexual reproduction.
- Algae are self-contained organisms, though some may form symbiotic relationships with other living things.