echinoderm การใช้

• The first echinoderms later gave rise to free-moving groups.
• The larvae of some echinoderm species are capable of asexual reproduction.
• Echinoderms, for example, exhibit unmistaken bilateral symmetry as larvae.
• Early echinoderms were bilaterally symmetrical, as their larvae still are.
• The echinoderm fossils were preserved in the St . Francis County.
• Amongst the echinoderms, the crinoids were the most numerous.
• Echinoderms first appeared in the fossil record in the Cambrian.
• Brachiopods, bivalves, echinoderms, bryozoans and corals were particularly affected.
• Many believe vertebrates diverged from a common ancestor of chordates and echinoderms.
• He also made significant contributions in his research of annelids and echinoderms.
• "Paracorynactis hoplites " are highly efficient predators of echinoderms.
• Commercially harvested echinoderms include sea cucumbers and sea urchins.
• Such a skeleton is present in echinoderms and chordates.
• All echinoderms are marine and nearly all are benthic.
• Echinoderms sometimes have large population swings which can cause marked consequences for ecosystems.
• Starfish and other echinoderms are sensitive to marine pollution.
• Appendage regeneration in echinoderms has been studied since at least the 19th century.
• However, some echinoderms have developed bilateral symmetry secondarily.
• Echinoderms primarily use their tube feet to move about.
• There are many important differences between chordates and echinoderms.