She should have to classify this animal under pseudocoelomates category. The body cavity of these animals are filled with fluids. Internal organs are covered by the fluid filled space. The body cavity serves as the hydrostatic skeleton and have other functions such as digestion of food and waste removal.
A blood cell, also called a hematocyte
Answer:
Vaccination/Vaccine
Explanation:
Vaccination/Vaccine: The process of using a dead or weakened version version of a microbe to gain antibodies, thus protecting against future infections without needing to have the disease first.
Bacteriophage: A virus that infects bacteria.
Antibiotics: Medicines are used to treat bacterial infections by killing the bacteria, and do not work on viruses.
Pathogenic: capable of causing disease.
