A wall lizard regrows part of its discarded tail after some time. This ability is an example of:

1. The wall lizard sheds part of its tail in an emergency. 2. Only the lost part is regrown, not a whole new lizard. 3. Regrowing only a body part is termed limited regeneration. 4. Fission, vegetative propagation and double fertilization are unrelated processes, so they are ruled out. _Source: Balbharati (Maharashtra Board) Class 10 Science & Technology Part 2, Ch 3 "Life Processes in Living Organisms Part 2", p.33_