Algaes are an overwhelming to define. Some classify the group as all eukaryotic photosynthesizing microorganisms. This definition includes the Euglenoid and also Dinoflagellates groups, both of i beg your pardon are well-known to be more closely related to other groups of non-photosynthesizing protozoa 보다 to various other algae. Because that this reason, those two teams are occasionally classified together protozoa quite than algae. In this discussion, us will team euglenoids and dinoflagellates through the algae so that we might compare their photosynthetic characteristics. Keep in mind that this inclusion does not indicate close relationship to various other algae.

You are watching: What characteristic do all algae share

Another difficulty in classifying birds is determining whether they space protists, plants, or whether they merit their ownkingdom. Different classification systems price this inquiry in various ways, with some even splitting the group in between the kingdoms Protista and also Plantae. Below we have grouped algae through protozoa and slime molds in Protista due to the fact that mthe bulk of algae are unicellular, and also even the multicellular algae space structurally basic compared come true plants.

Within the classification of algae, individual types are separated into five groups, based on characteristics such as form of chlorophyll molecule supplied in photosynthesis and type of reproductive cycle. The framework of the chloroplasts is likewise used, because that a very important reason. Follow to the endosymbiotic theory of chloroplasts evolution, proposed by Lynn Margulis of the university of Massachusetts, Amherst, chloroplasts may have evolved when little photosynthesizing cells to be engulfed, yet not digested, by bigger cells. Instead, the two varieties of cells occurred a symbiotic relationship, through the photoautotroph living inside the larger cell. The variety of membranes bordering the chloroplast permits us to identify what form of biology the original photoautotroph was. If it was a prokaryote, the chloroplastic will have actually two membranes: one native the engulfed cell and one native the engulfing cell. If it came from a eukaryote, the chloroplasts will have actually three membranes: the original organelle membrane, the plasma membrane of the engulfed cell and the membrane native the engulfed cell. This two feasible endosymbiotic occasions are diagrammed below.

green Algae

Green algae can be one of two people unicellular or multicellular. They live mainly in new water, however some have the right to live on floor in moist soils. A few green algae are uncovered in marine environments. This organisms frequently live symbiotically through aquatic and marine animals. They space of particular interest since the group from which land plants evolved, the charophyta, are environment-friendly algae.

See more: How To Delete Adult Friend Finder Account Permanently, Help And Support Faq

The green algae are regularly classified in the Kingdom Plantae, based upon two attributes shared with greater plants: 1) green algae use chlorophyll a and b in photosynthesis; 2) the chloroplasts of green algae space enclosed in a dual membrane. This 2nd characteristic indicates that the chloroplasts developed from endosymbiosis of a prokaryote, as is the case with greater plants. Also, evaluation of genetic material suggests a high level of relatedness in between green algae and terrestrial plants.

The life cycle of eco-friendly algae is shown below.

*
Figure %: Life bicycle of the green AlgaeHaploid spores give rise come a multicell haploid leaf-like structure dubbed a thallus. The thallus to produce gametes. Eco-friendly algae are isogamus, definition they have only one type of gamete, fairly than having separate male and also female gametes. As soon as two gametes meet, fertilization takes place and also a diploid zygote is formed. The zygote then germinates, undergoes meiosis and also forms haploid spores. Thediploid phase of the life cycle is brief and unicellular. There space a few exceptions this basic life cycle, such as the Ulva (sea lettuce), which has a multicellular diploid phase similar to that found in brown algae.