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Example of sponges and coelenterates and worms and mollusks and echinoderms and arthropods?
A Sponge is a sponge. Coelenterates include all the types of corals, hydra, jelly fish. Worms include ribbon, tape, hook, heart, ascaris, earth worms. Mollusks include clams, mussels, barnacles, oysters, octopi, squid, nudibranchs. Arthropods include crabs, lobsters, scorpions, Spiders, insects.
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What the meaning of spiny skin animals?
The Spiny skin sea-animals also known as Echinoderms consist of about 6000 species. They are commonly grouped together as starfish and sea urchins.
What is an evolutionary constraint?
We've seen that arthropods have some powerful tools for success, and they've succeeded in many ways - in terms of longevity, number of individuals, number of species, and variety. However, arthropods have not "done it all." Vertebrates have regularly shut out arthropods in at least one department: size. Land-dwelling vertebrates have gotten big - really big, in the case of dinosaurs - but even your typical modern vertebrate - a lizard, for example - is heftier than all but the largest terrestrial arthropodWe've seen that arthropods have some powerful tools for success, and they've succeeded in many ways - in terms of longevity, number of individuals, number of species, and variety. However, arthropods have not "done it all." Vertebrates have regularly shut out arthropods in at least one department: size. Land-dwelling vertebrates have gotten big - really big, in the case of dinosaurs - but even your typical modern vertebrate - a lizard, for example - is heftier than all but the largest terrestrial arthropods. s.
What is a exoskeleton?
An exoskeleton is a hard external covering that provides support and protection for the body of some animals, such as insects and crustaceans. It is made of a tough material like chitin and serves as a shell-like structure that covers the animal's body.
What invertebrates have bilateral symmetry?
All arthropods (which are invertebrates) have bilateral symmetry. This includes:insects, such as butterflies, bees, ants, beetles, etccrustaceans, such as crabs, crayfish and lobstersarachnids, such as spiders and scorpionsEarthworms also have bilateral symmetry.
How have appendages of arthopods changed during evolution?
The HOX genes found in arthropods are a good example of how evolution may affect the overal structure of organisms. Arthropods are segmented organisms, and the development of segments and limbs in animals is regulated by HOX genes. As HOX genes change, the number of segments and limbs may change. Geneticists can demonstrate this by knocking out or otherwise altering the HOX genes in insects, causing abnormal development to occur, like extra segments, extra legs, legs for antennae, and so on. Today, there exists a wide variety of arthropods, each with a unique body plan and morphology. So too have their appandages diverged into many different forms.
What is intervertebrate?
An Invertebrate is a creature with no back bone. The most common invertebrates include protozoa, annelids, echinoderms, mollusks and arthropods. Example of invertebrates: worms, snails, starfish, spiders and crabs.
Trilobites are an example of what?
arthropods
What are the example of mollusks?
a snail is a mollusk
What are example of mollusks?
a snail is a mollusk
Example of the echinoderms?
sea cucumber sea lily
How do arthropods look like?
Arthropods have armor or shells and big eyes take the dragonfly or scorpion for example
What characteristics are shared by organisms in each animal phylum?
Organisms are grouped in the phylum by based on the general body plan. In other words, two organisms are in the same phylum if they have similar developmental processes or evolutionary relatedness.
Do arthropods have cehphlathorax?
Only some arthropods have a cephalothorax, like for example the lobster. Other arthropods have functionally separate (or non-fused) head and thorax, like many insects.
What is the similarities of arthropods?
Since arachnids are simply a subgroup of arthropods, all characteristics of arachnids are also an example of arthropod characteristics by definition (notwithstanding, all arthropods won't share specific arachnid characteristics).
Ecological relationship of echinoderms to other organisms?
Echinoderms have various ecological relationships with other organisms. For example, they may have mutualistic relationships with certain species that help them remove parasites, or they may have predatory relationships with smaller organisms that they feed on. Echinoderms also provide habitats for other organisms by creating complex structures on the seafloor.
What group is a starfish in?
It belongs to Echinoderms.
What animals are not arthropods?
Because Arthropoda is a phylum, one need only look for any other animal phylum to find non-arthopods. Chordates for example, mammals, fish, birds. Mollusca, with slugs, snails, squid, octopi. Echinoderms, like sand dollars and starfish. Annelida, with earthworms, leeches, and so on. Chances are, if there's an animal which doesn't have a chitin exoskeleton, you've found something not an arthropod.
