Starfish

Starfish or sea stars are echinoderms belonging to the class Asteroidea. The names "starfish" and "sea star" essentially refer to members of the Class Asteroidea. However, common usage frequently finds "starfish" and "sea star" also applied to ophiuroids which are correctly referred to as "brittle stars" or "basket stars".

Protists are similar to bacteria in that they are both single-celled organisms. However, protists are eukaryotic, meaning they have a nucleus and other membrane-bound organelles, while bacteria are prokaryotic. Additionally, some protists are capable of photosynthesis like bacteria, but protists overall exhibit more complex cellular structures and functions.

No, not all protists have cell walls. Some protists have cell walls made of various materials like cellulose or silica, while others do not have cell walls at all. The presence or absence of a cell wall depends on the specific type of protist.

This depends on the organisms, but many things that live in the sea breathe through gills. There is oxygen in the water so they take in water and they will diffuse the oxygen out of the water into their cells.

One early developmental event suggesting frogs are more closely related to sea stars than either group is related to snails or worms is gastrulation. In both frogs and sea stars, gastrulation involves the formation of a blastopore that becomes the opening of the digestive tract, while this differs in snails and worms. Additionally, frogs and sea stars share radial cleavage during early cell divisions, unlike the spiral cleavage seen in snails and worms.

If you look at an echinoderm such as a sea urchin or a sand dollar, you will see that the shell is covered in a pattern (of ambulacral and interambulacral areas) with 5 fold symmetry. A starfish has 5 arms and if you imagine a starfish folding its arms up and over its back until the tips meet, then you will see it begins to resemble a sea urchin, the two are clearly related and have a common ancient ancestor.

the ventral surface of a starfish is called oral

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Yes, certain species of starfish can live in the Arctic. They have adapted to the cold temperatures and are able to survive in the frigid waters of the Arctic Ocean. These starfish have unique adaptations that help them thrive in this harsh environment.

actually your wrong im also in 7th grade science they are both a single celled organism

Interconnected canals and hollow tube feet work together in a sea star's water vascular system, which helps with movement, feeding, and respiration. Sea stars use water pressure to extend and retract their tube feet, enabling them to grip surfaces and capture prey.

Moths belong to the phylum Arthropoda and the class Insecta.

Crown of Thorns Starfish can live for up to 10 years in the wild.

Starfish are predators that feed on mussels and other shellfish in the beach ecosystem, helping to control their populations. Other plants in the ecosystem provide shelter and food for small organisms that the starfish may also feed on. This interconnected relationship helps maintain a balance within the ecosystem.

Animal-like protists are called protozoa. Protozoaare single-celled eukaryotes that share some traits with animals. Like animals, they can move, and they are heterotrophs.

Examples of one-celled animal-like protists include amoebas, paramecia, and trypanosomes. These protists are eukaryotic organisms that possess animal-like characteristics such as mobility and heterotrophic feeding behavior. They can be found in various aquatic environments and play important roles in nutrient cycling and food chains.

Protists that are producers typically contain chloroplasts, allowing them to photosynthesize and produce their own food using sunlight, water, and carbon dioxide. These protists are usually green in color due to the presence of chlorophyll. Additionally, they release oxygen as a byproduct of photosynthesis.

A cylindrical protist has a higher surface are to volume ratio. This is because of the physical properties of spheres (some rather complicated math proves that spheres hold the most volume for their area).

No, starfish are not omnivores. They are primarily carnivores, feeding on small organisms like bivalves, barnacles, and snails. They use their tube feet to pry open the shells of their prey and then push their stomachs outside their bodies to digest their food.

All protists possess a eukaryotic cell structure, meaning they have a nucleus and other membrane-bound organelles. They are unicellular, though some can form colonies or be multicellular. Protists exhibit a wide range of nutritional modes and can be autotrophic, heterotrophic, or mixotrophic.

Starfish are Echinoderms, and there are many species in several orders.

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Protists defend themselves through various mechanisms such as producing toxins, forming protective shells or cysts, using flagella to escape predators, and engulfing or expelling invaders through phagocytosis. Some protists also have mutualistic relationships with other organisms for protection.

The starfish takes in water into the tube feet, (expanding the tube feet) the water is then forced out of the tube feet, (contracting the tube feet) making it able to grab onto the object.

Respiration - The starfish has a water vascular system in which the repiratory exchange between oxygen and carbon dioxide occurs. * The tube feet of the starfish act like gills. The Oxygen enters the water vascular system through the tube feet as the carbon dioxide exits the body. http://intro.bio.umb.edu/111-112/112s99Lect/bodyplans/starfish.html