Coelentrates have hydrostatic skeletion except:
Correct answer: A. Coral
- A. Coral
- B. Sea anemone
- C. Hydra
- D. Jellyfish
Explanation
Corals are unique among coelenterates because they secrete a hard exoskeleton made of calcium carbonate (CaCO3), which is distinct from the hydrostatic skeleton found in other coelenterates like sea anemones, hydras, and jellyfish. These other organisms use fluid pressure within their bodies to maintain shape and support movement. Thus, corals are the exception to the typical hydrostatic skeleton seen in this group.
Last updated
Related questions
1. Fertilization_. 2. Digestive system_.3. Excretion by_.Fill in the blanks for the organism given in the below figure:
80% of the food of sponges consists of which of the following?
80% of the food of sponges consists of which of the following?
A blue colored respiratory pigment called hemocynanin is found in:
A body cavity completely surrounded by tissue derived from the mesoderm that provides cushioning for internal organs is called