By the fifth week, the genital ridges differentiate into an outer cortex and an inner medulla, and are called indifferent gonads.
They feed on the fleshy outer cortex of the main tap root of the host plant, always below ground.
In the dicotyledons, the bundles in the very young stem are arranged in an open ring, separating a central pith from an outer cortex.
All ganglia consist of an outer cortex containing the nuclei and an inner medulla.
New lens fibers, generated from the lens epithelium, are added to the outer cortex.
Additional structural support was provided in lycophytes by a special periderm tissue in the outer cortex.
Cells of the inner or outer cortex in the so-called "window of nodulation" just behind the developing root tip are induced to divide.
The cortex is also divided into outer cortex and inner cortex (aka.
They feed on the underside of the leaves of the host plant, eating only the outer cortex and never through the leaf.
"Do you see the outer cortex and then the clusters of algae?"