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Invertebrates do not have spines (backbones). See related questions and links for more information.

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16y ago

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Is a horseshoe crab a vertebrate or invertebrate?

A horseshoe crab is an invertebrate. It lacks a backbone or spine, which are characteristic features of vertebrates.


What is a more advanced characteristic in invertebrate evolution?

exsoskeleton, flight


Which characteristic supports that a mollusk is classified as an invertebrate?

i think it is bilateral body symmetry


What is a characteristic of Echinoderms?

Invertebrate animals with spikes and spines all over their bodies.


What are two characteristic of arthropods?

An arthropod is an invertebrate animal with an exoskeleton , a segmented body, and jointed appendages.


What characteristic distinguishes arthropods and mollusks?

Mollusks compose of the large phylum of invertebrate animals known as the Mollusca. Mollusks have a mantle, mollusks invertebrate. Arthropods have jointed appendages, arthropods have segmented bodies


What are the characteristics of planarians?

the characteristic of planaria is has a smooth body and planarian is no have a backbone because planaria is a invertertibrate and invertebrate animals are no have a backbone


What makes the snail an invertebrate?

The defining characteristic of all molluscs is the presence of the mantle. Snails have a mantle, and are thus a mollusc.


Is lobster a vertebrate or invertebrates?

invertebrate - has exoskeleton


Is a mussel an invertebrate or vertebrate?

An invertebrate.


What trend did not occur during invertebrate evolution?

One trend that did not occur during invertebrate evolution is the development of true segmentation in all invertebrate lineages. While segmentation is a prominent feature in some groups, such as annelids and arthropods, many invertebrates, including cnidarians and mollusks, do not exhibit this characteristic. Instead, invertebrate evolution is marked by a diversity of body plans and organizational structures, with some lineages remaining unsegmented throughout their evolutionary history.


Is a conch a invertebrate or a invertebrate?

no