Structural adaptations<span> are physical features of an organism like the bill on a bird or the fur on a bear. Other </span>adaptations<span> are behavioral. Behavioral</span>adaptations<span> are the things organisms do to survive. For example, bird calls and migration are behavioral</span>adaptations<span>.</span>
The organelle that maintains pressure against the cell wall, so that the plant cell keeps it shape, is
the (a) central vacuole.
