Question

question 1
10 points
members of this group are important model organisms in the study of regeneration.
aporifera
bcnidaria
cmollusca
dplatyhelminthes
eannelida

Explanation:

• Porifera (A): While some sponges (Porifera) have limited regenerative abilities, they are not the most prominent model organisms for regeneration studies.
• Cnidaria (B): Some cnidarians like Hydra have regenerative capabilities, but they are not as widely used as the organisms in another group for comprehensive regeneration research.
• Mollusca (C): Mollusks generally do not have the highly studied and extensive regenerative properties that make them a top - choice model for regeneration.
• Platyhelminthes (D): Planarians (a type of Platyhelminthes) are extremely well - known for their remarkable regenerative abilities. They can regenerate entire bodies from small tissue fragments, and their stem - cell like neoblasts are key to this process. They are a classic model organism for regeneration studies.
• Annelida (E): While some annelids like earthworms can regenerate to some extent, their regenerative capacity is not as extensive and well - studied as that of planarians.

Answer:

D. Platyhelminthes