How did the Physarum polycephalum respond to the oatmeal flakes placed on the agar in the petri dish

Like amoeba.

Explanation:

The Physarum polycephalum respond like amoeba to the oatmeal flakes that is placed on the agar in the petri dish because it ingests solid food particles in the same way as an amoeba do and can also absorb dissolved nutrients. Physarum polycephalum feed like amoeba by using its membrane or outer layer surrounding the food particles such as oatmeal flakes and take inside the body for digestion of that food particles.

c: cohesion

Explanation:

This cohesive relationship between the systems is known as pulmonary circulation. It helps the circulatory system in pumping the blood from the feet to the heart.