What is the basic cell type that provides support as the plant grows

Parenchyma cells are the most common plant cell type.Collenchyma Cells provide support to a growing plant. Xylem contains other types of cells besides the basic cell types.

The rate that would change would be the  searching efficiency/attack rate. there are only two other rates in this model: the  growth rate of prey, and the  predator or consumer mortality rate.the  searching efficiency/attack rate is what indicates how effectively can a predator capture its prey whether in the searching process or actual capturing/attacking process.