Question

"During a dissection, you push a pin from the outside of an organism into its gastrointestinal tract. In doing so, you pass through multiple distinct mesoderm layers on the way to the GI tract. Which of these statements is likely true

a) The organism is a coelomate.

b) The organism is a protostome.

c) The organism is a cnidarian.

d) The organism diploblastic.

Answer 1

Answer: Option A.

The organism is ceolomate.

Step-by-step explanation:

Ceolomate refers to types of animals that have true coelom or fluid filled cavity between their gastrointestinal tracts and wall. The coelom arise from the mesoderm layers and is lined by epithelial tissues. The importance of this coelom is to help the mesenteric layer to suspend the gut in the middle of the animal.

Examples are molluscs, arthropoda, echinoderms and chordates.