EVERYDAY SCIENCE

Detailed explanation-1: -The pinacoderm is the outermost layer of body cells (pinacocytes) of organisms of the phylum Porifera (sponges), equivalent to the epidermis in other animals.

Detailed explanation-2: -Pinacocytes, which are epithelial-like cells, form the outermost layer of sponges, enclosing a jelly-like substance called mesohyl. Mesohyl is an extracellular matrix consisting of a collagen-like gel with suspended cells that perform various functions.

Detailed explanation-3: -Pinacocytes, which are epithelial-like cells, form the outermost layer of sponges and enclose a jelly-like substance called mesohyl.

Detailed explanation-4: -Pinacocytes are flat cells found on the outside of sponges, as well as the internal canals of a sponge.

Detailed explanation-5: -So, the correct answer is ‘Pinacocytes’.