Question

Which is true about regeneration?
A) Beak in birds
B) Tail in lizards
C) Fish fins
D) All of the above

Answer 1

Hint: 1) The regrowth of a weakened or missing organ section from the remaining tissue is referred to as regeneration.
2) Humans can regenerate certain organs as adults, such as the liver.
3) If a portion of the liver is lost due to disease or damage, the liver develops back to its full size but not to the original form.

Complete answer
Option A: Since the beak has a plentiful blood supply, any beak attack is likely to result in heavy bleeding. A cracked beak will not expand together, but will eventually heal. As a result, this is right.
Option B: Lizards are the only amniotes that can regenerate their tails as adults, and unlike anamniotic salamanders, adult lizard axial skeletons are entirely ossified. Both salamanders and lizards regenerate their tails, and the bones of their regenerated tails are almost entirely cartilaginous. So this is also true.
Option C: A fish's amputated caudal fin will regenerate entirely. Similar to amphibian limb reproduction, a regenerating fin develops a blastema, and cells inside the blastema proliferate and re-differentiate to provide new fin rays.
OptionD is correct: Since options A, B, and C are right. As a result, the answer will be all of the above.

Solution
Regeneration is the formation of new cells or tissues from damaged areas of the body. It can be found in both plants and animals. Beak regeneration in birds, tail regeneration in lizards, and fish fin regeneration are the best examples of regeneration.

As a result, the right answer is ‘all of the above.'

Note:
1) Tissue regeneration is common in echinoderms and has been extensively studied in starfish (Asteroidea), sea cucumbers (Holothuroidea), and sea urchins (Echinoidea).
2) Echinoderm appendage regeneration has been studied since at least the nineteenth century.
3) Some animals can rebuild internal organs and portions of their central nervous system in addition to appendages.