OESOPHAGUS STOMACH
ECHINODERMS
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Reconstructive meiosis
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Regeneration
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Tissue regenesis
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Mitotic restoration
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Detailed explanation-1: -Though starfish are well understood to utilize their regenerative capabilities to regrow arms eaten or damaged by predators, they are also capable of regenerating arms they have intentionally shed through a process known as autotomy.
Detailed explanation-2: -Asexual reproduction occurs by fragmentation when the animal breaks into two parts and each half forms a complete new sea star or by regeneration of parts of the animal. Life span is 3-5 years.
Detailed explanation-3: -For starters, they are among the few species on the planet that can regenerate their arms. They can do this because of two reasons: Because they house their vital organs in their central disc, and because they have what scientists call ‘indeterminate stem cells’.
Detailed explanation-4: -Starfish. These five-limbed creatures can regrow arms that detach from their central disc, and some species have even been observed to complete the process in reverse: regrowing an entire body from a lost arm. To do this the starfish will store nutrients in the arm until it is able to regrow its mouth.
Detailed explanation-5: -Asexual reproduction in starfish takes place by fission or through autotomy of arms. In fission, the central disc breaks into two pieces and each portion then regenerates the missing parts.