logo

Animation: Stem Cross Sections

by Pearson
2 views
Was this helpful ?
0
Stem cross sections: The outermost layer of a eudicot stem is the epidermis. In most eudicot stems, the vascular tissue forms separate strands called vascular bundles. Each vascular bundle consists of xylem toward the inside of the stem and phloem toward the outside. In most eudicot species, the vascular bundles are arranged in a ring. Ground tissue between the epidermis and the ring of vascular bundles is called the cortex. Ground tissue in the center of the stem is called pith. As in eudicot stems, the outermost layer of a monocot stem is the epidermis. However, the arrangement of vascular bundles in most monocots differs from most eudicots. Instead of forming a ring, the vascular bundles are scattered throughout the stem. Each vascular bundle, consisting of xylem and phloem, is surrounded by ground tissue.
Stem cross sections: The outermost layer of a eudicot stem is the epidermis. In most eudicot stems, the vascular tissue forms separate strands called vascular bundles. Each vascular bundle consists of xylem toward the inside of the stem and phloem toward the outside. In most eudicot species, the vascular bundles are arranged in a ring. Ground tissue between the epidermis and the ring of vascular bundles is called the cortex. Ground tissue in the center of the stem is called pith. As in eudicot stems, the outermost layer of a monocot stem is the epidermis. However, the arrangement of vascular bundles in most monocots differs from most eudicots. Instead of forming a ring, the vascular bundles are scattered throughout the stem. Each vascular bundle, consisting of xylem and phloem, is surrounded by ground tissue.