Cerci (abdominal appendages)

Cerci (singular cercus) are paired appendages on the rear-most segments of many arthropods, ... In basal arthropods, such as silverfish, the cerci originate from the eleventh abdominal segment.

Explanation: Hope this helps

lysosomes contain a variety of enzymes, enabling the cell to break down various biomolecules it engulfs, including peptides, nucleic acids, carbohydrates, and lipids (lysosomal lipase). the enzymes responsible for this hydrolysis require an acidic environment for optimal activity. hope i !