NEET BIOLOGY

Detailed explanation-1: -Starfish exhibit an asexual mode of reproduction through binary fission and regeneration. Starfish is a bisexual organism and undergoes regeneration as a method for asexual reproduction. In binary fission, the parent organism’s cell divides exactly into two genetically identical daughter cells.

Detailed explanation-2: -Like in humans, the sexual reproduction of sea stars involves the joining of genes from a male and a female. But some sea stars and brittle stars are able to duplicate themselves, a process called asexual reproduction.

Detailed explanation-3: -Some animals are known for their ability to regrow – or regenerate – body parts following dramatic injury. Starfish are among the most famous and dramatic examples, being able to grow an entire new body from just a single arm. Starfish also have the ability to regenerate neurons, something not seen in many animals.

Detailed explanation-4: -Reproduction: Sea stars are broadcast spawners. Males release sperm into the water and females release eggs. The fertilized eggs hatch into a larval form that lives as plankton, sometimes for months, before settling on the sea floor in its adult form.

Detailed explanation-5: -Asexual reproduction is by fragmentation, a part of an arm and part of the central disk becomes detached from the “parent” and develops into an independent individual sea star. In the past, many sea stars have been “killed” by chopping them into pieces but they have been able to regenerate and grow into more sea stars.