Animal Kingdom Question 303
Question: Tube-within-a-Tube body plan is shown by
Options:
A) Cnidaria
B) Platyhelminthes
C) Aschelminthes (Nematoda)
D) Porifera
Show Answer
Answer:
Correct Answer: C
Solution:
In tube-within-a-tube plan the body of an animal has two tubes, one formed by the body wall and the second formed within it by the digestive tract.
This type of body plan is found in Aschelminthes up to chordata.
BETA
