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Identify and describe the unique system an echinoderm has what is it used for?
The name echinoderm means "spiny skin." Echinoderms have spines of various lengths that cover the outside of their bodies. Most echinoderms are supported and protected by an internal skeleton made up of bonelike plates. Echinoderms have a simple nervous system but don't have heads or brains.
How are Echinodermata helpful?
There are many ways in which the echinoderms are helpful to the environment. They help to clean up the waste of other marine organisms and they help to maintain the biodiversity within their ecosystem.
What are the 6 kingdoms of classification?
FungiProtistaAnimilaPlantaeBacteriaArcheabacteria6 kindoms:plantsanimalsfungiprotistsarchaeeubacteria
Do protists have cell walls?
There is no longer a Kingdom of Protists. They are not a monophyletic group (clade). So, the answer is some do some don't. Algae (a type of photosynthetic protist) tend to have a cell wall. Protozoa (the animal like protists) do not. Most single cell protozoa have a pellicle to protect the cell.
What are some examples of a bottom dweller?
Some examples of bottom dwellers are polychaete worms, bivalves, echinoderms, sea anemones, corals, sponges, sea squirts, turbellarians and larger crustaceans such as crabs, lobsters and cumaceans. The live in the Benthic zone.
Why is the kingdom animalia polyphyletic and not monophyletic?
Its not polyphyletic, its monophyletic. There are no points where members stop being animals. Many mistake Porifera (sponges) as an exception, but they are animals too.
A taxon such as the class reptilia which does not include its relatives the birds is... a. really an order b. a clade c. monophyletic d. polyphyletic e. paraphyletic?
e. paraphyletic
Which of the following are problematic when the goal is to construct phylogenies that accurately reflect evolutionary history A monophyletic taxa B polyphyletic taxa C paraphyletic taxa?
Polyphyletic and paraphyletic taxa are problematic when the goal is to construct phylogenies that accurately reflect evolutionary history. These taxa do not accurately represent the evolutionary relationships between species and can lead to incorrect interpretations. Monophyletic taxa, on the other hand, are ideal for constructing phylogenies as they include all descendants of a common ancestor.
Are snakes and lizards polyphyletic?
yes they r polyphyletic
Why are animals monophyletic?
Because they're descended from a common ancestor and the classified group includes all animals. The other kinds, para- and polyphyletic groups, are classified groups that have multiple ancestors (poly) or are a single group but with parts excluded (para). Carnivorous plants are polyphyletic, as they include many different genera, and reptiles are paraphyletic, because it excludes birds which are technically still reptiles.
What are the theories of hematopoeisis?
The two main theories of hematopoiesis are the monophyletic theory, which suggests that all blood cells arise from a common stem cell, and the polyphyletic theory, which proposes that different blood cell lineages have separate origins. Recent evidence supports the monophyletic theory, where a single hematopoietic stem cell gives rise to all blood cell types through a hierarchical differentiation process.
What is the difference between a clade and a monophyletic group in evolutionary biology?
In evolutionary biology, a clade is a group of organisms that includes an ancestor and all of its descendants. A monophyletic group is a type of clade that includes only the most recent common ancestor and all of its descendants. So, all monophyletic groups are clades, but not all clades are necessarily monophyletic groups.
What does monophyletic group consist of?
A group of species that consists of a common ancestor and all of its descendants (also referred to as a clade).
Each of the current five supergroups is considered to be?
polyphyletic Edoptions (:
What kingdom are echinoderms in?
Echinoderms are in the Animalia kingdom.
What is the scientific name for Echinoderms?
The scientific name for Echinoderms is Echinodermata.
What phylum do echinoderms belong to?
Echinoderms belong to the phylum Echinodermata.
