OESOPHAGUS STOMACH
ECHINODERMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Reproduce is the birth of new echinoderms and regeneration is the regrowth of limbs
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Nothing they are the same
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Either A or B
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None of the above
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Detailed explanation-1: -Myogenesis. All echinoderms have the capability to regenerate some or most organs or appendages. Since the regenerated structures are usually identical to the lost ones, including their muscular components, it has then been assumed that formation of new muscle cells or myogenesis occurs in all echinoderms.
Detailed explanation-2: -Our human cells can do a lot of amazing things but the cells of echinoderms take it to a whole other level. Sea stars, brittle stars, and sea cucumbers all have the ability to regrow entire body parts!
Detailed explanation-3: -This type of regeneration is called epimorphosis and is characteristic of regenerating limbs. The second mechanism is called morphallaxis. Here, regeneration occurs through the repatterning of existing tissues, and there is little new growth.
Detailed explanation-4: -In sea stars and sea urchins, morphallaxis is the main regenerative process, involving cells derived from existing tissues by differentiation, transdifferentiation or migration2, 3. Importantly, echinoderms are deuterostomes and an average of 70% of echinoderm genes have human homologues8.