What is the unifying characteristic of the Archaeplastida super group?
Archaeplastida are a supergroup of protists that comprise red and green algae, which include unicellular, multicellular, and colonial forms.
What is included in Archaeplastida?
Archaeplastida consists of three groups: Chloroplastida, Rhodophyta, and Glaucophyta. Chloroplastida (also known as Viridiplantae or Chlorobionta) includes the various green algae, that is, all the primary algae with chlorophyll b in addition to chlorophyll a, and the land plants.
What are examples of Archaeplastida?
Green algaeRed algaeRhodophytae
What does Archaeplastida refer to?
Supplement. Kingdom Archaeplastida is a taxonomic group comprised of land plants, green algae, red algae, and glaucophytes. It is sometimes used in synonymous to Plantae. However, the stricter use of the term Plantae is one that which includes only the land plants and green algae.
Is Archaeplastida multicellular?
True multicellular organisms, such as the sea lettuce, Ulva, are also represented among the chlorophytes. In addition, some chlorophytes exist as large, multinucleate, single cells. Species in the genus Caulerpa exhibit flattened fern-like foliage and can reach lengths of 3 meters (Figure 2).
Are horsetails Archaeplastida?
All modern horsetails are homosporous. Horsetail gametophytes are very similar to those of ferns. Equisetum sporophytes fall into two morphological categories. One group of species forms unbranched, photosynthetic, aerial stems.
Why is Archaeplastida important?
The Archaeplastida are one of the major evolutionary lineages of photosynthetic organisms, and arguably the most important for animals, including humans, because the ancestors of one group (green algae and plants) was able to invade land and set the stage for the evolutionary movement onto land of many animal groups.
Do Archaeplastida have plasmodesmata?
Archaeplastida are protists and plants are not. Plants perform alteration of generations and Archaeplastida do not. Plants have plasmodesmata and Archaeplastida do not.
Are Chlorophytes Archaeplastida?
Charophytes are the green algae which resemble land plants and are their closest living relative. Chlorophytes are the green algae which exhibit a wide range of forms; they can be unicellular, multicellular, or colonial.
Do Archaeplastida have Plasmodesmata?
Where are Archaeplastida found?
Chlorophytes primarily inhabit freshwater and damp soil, and are a common component of plankton. Chlamydomonas is a simple, unicellular chlorophyte with a pear-shaped morphology and two opposing, anterior flagella that guide this protist toward light sensed by its eyespot.
How are Archaeplastida related to land plants?
It was from a common ancestor of these protists that the land plants evolved, since their closest relatives are found in this group. Molecular evidence supports that all Archaeplastida are descendents of an endosymbiotic relationship between a heterotrophic protist and a cyanobacterium.
Who are the members of the Archaeplastida group?
Molecular evidence supports the hypothesis that all Archaeplastida are descendents of an endosymbiotic relationship between a heterotrophic protist and a cyanobacterium. The protist members of the group include the red algae and green algae.
How are archaeplastids different from other cyanobacteria?
The archaeplastids fall in two main evolutionary lines. The red algae are pigmented with chlorophyll a and phycobiliproteins, like most cyanobacteria. The green algae and land plants (together known as Viridiplantae, Latin for “green plants”) are pigmented with chlorophylls a and b, but lack phycobiliproteins.
What are the characteristics of a Protista clade?
1. General Characteristics and structures – The members of this clade have a single, large mitochondrion that contains a large mass of DNA called a kinetoplast. 2. Biogeography – The members of this clade include species that feed on prokaryotes in freshwater, marine and most terrestrial habitats.