Question Detail

ZOO 102 Foundations of Animal Systematics and Phylogeny Objective Question

Question

What is the difference between a 'eucoelomate' and a 'pseudocoelomate'?
Options
A Eucoelomates have no coelom; pseudocoelomates have a true coelom
B Eucoelomates have a coelom entirely lined by mesoderm; pseudocoelomates have a cavity derived partly from mesoderm and endoderm
Correct Answer
C Eucoelomates are diploblasts; pseudocoelomates are triploblasts
D Eucoelomates have a mouth that develops first; pseudocoelomates have an anus that develops first
Correct Answer

Option B is the correct answer.

Detailed Explanation

Eucoelomates (or true coelomates) have a cavity fully derived from mesoderm. Pseudocoelomates have a 'false' coelom formed between the mesoderm and endoderm.

Hint

The prefix 'pseudo-' means false.

Question Info