AP BIOLOGY

Detailed explanation-1: -Herbaceous plants do not have a woody stem above the ground, instead they have a soft, green flexible stem. They are mostly biennials and annuals, along with a few perennials.

Detailed explanation-2: -Herbaceous plants are non-woody plants, such as most ferns and grasses, which either form tiny amounts of hard woody tissue, or none at all. Unlike woody plants, such as trees, these plants don’t have a stem that will remain above the ground when their leaves die.

Detailed explanation-3: -Woody plants have stems that live for several years, adding new growth (height and width) each year. Woody plants may be classified as trees, shrubs or vines and may have evergreen, semi-evergreen or deciduous leaves. Herbaceous plants have stems that die back to the ground each year.

Detailed explanation-4: -The biological term that refers to stems that are non-woody is herbaceous. Herbaceous stems are soft and do not build upon themselves to grow.

Detailed explanation-5: -The herbaceous stem is composed of vascular bundles (xylem and phloem) arranged in a circle around a central core of spongy tissue made up of parenchyma cells, called the pith. Surrounding the vascular bundles is a layer known as the cortex, which varies in thickness from species to species.