Regarding the fundamental basis of animal classification, which of the following statements are accurate?
a. In sponges, the cells are arranged as loose cell aggregates, exhibiting a cellular level of organisation.
b. In coelenterates, cells performing the same function are arranged into tissues, which is called the tissue level of organisation.
c. The organ level of organisation is exhibited by members of Platyhelminthes and other higher phyla.
d. Annelids, Arthropods, Molluscs, Echinoderms, and Chordates exhibit an organ system level of organisation.
e. The digestive system in Platyhelminthes is complete, with a separate mouth and anus.
f. In a closed circulatory system, blood is pumped out of the heart, and the cells and tissues are directly bathed in it.
g. Sponges are mostly radially symmetrical, meaning any plane passing through the center divides them into equal halves.
h. Coelenterates, ctenophores, and adult echinoderms exhibit radial symmetry.
