Tilopteridales is an
order
Order, ORDER or Orders may refer to:
* A socio-political or established or existing order, e.g. World order, Ancien Regime, Pax Britannica
* Categorization, the process in which ideas and objects are recognized, differentiated, and understood
...
of
brown algae
Brown algae (: alga) are a large group of multicellular algae comprising the class (biology), class Phaeophyceae. They include many seaweeds located in colder waters of the Northern Hemisphere. Brown algae are the major seaweeds of the temperate ...
(class Phaeophyceae).
This order contains algae with different types of alternation of generation. For instance, ''
Saccorhiza polyschides
''Saccorhiza polyschides'', common name furbellow, is a large brown algae of the lower shore and is the largest seaweed found in Europe.[sporophyte
A sporophyte () is one of the two alternation of generations, alternating multicellular organism, multicellular phases in the biological life cycle, life cycles of plants and algae. It is a diploid multicellular organism which produces asexual Spo ...]
with a kelp-like morphology while the
gametophyte
A gametophyte () is one of the two alternating multicellular phases in the life cycles of plants and algae. It is a haploid multicellular organism that develops from a haploid spore that has one set of chromosomes. The gametophyte is the se ...
is filamentous, ''
Cutleria multifida'' has a more complex dichotomously branching gametophyte and a crustose sporophyte, ''
Zanardinia typus'' has an isomorphic alternation of generations, and ''
Tilopteris mertensii'' only has a
diploid
Ploidy () is the number of complete sets of chromosomes in a cell, and hence the number of possible alleles for autosomal and pseudoautosomal genes. Here ''sets of chromosomes'' refers to the number of maternal and paternal chromosome copies, ...
phase.
References
External links
*
Brown algae orders
{{Phaeophyceae-stub