stem

Many of the world’s threats stem from lack of opportunity which, in turn, leads to poverty, social erosion, and political instability.

Their aggressiveness stemmed from fear.

This belief stemmed from early exposure to sad British pop music.

The rapid expansion in international trade also benefitted from an infusion of capital, stemming largely from gold and silver brought by Spanish vessels from the Americas.

Other failures stem from process problems, like inadequate training for newly-hired employees.

He cut the stem with his knife and handed her the flower.

Toxic minerals would first be absorbed by roots but later relocated to the stem and leaves.

Leaves develop chlorosis; stems are short and slender, and anthocyanin discoloration occurs on stems, petioles, and lower leaf surfaces.

Of course the plants in these colonies also need tough resilient stems above the soil, stems that can bent a lot but not break as water constantly crashes into them.

How? Well，They have tough sort of underground stems called rhizome.

Soil there is dense and very low in oxygen, so Spartinas have air tubes, air enters through tiny openings on the leaves, the tubes provide direct pipe line for oxygen, carrying it down the leaves through the stems and into the roots, where it is needed.

It spreads primarily by underground stems; colonies form when pieces of the root system or whole plants float into an area and take root or when seeds float into a suitable area and germinate.

The first is an automatic, metabolic system whose control is centered in the brain stem.

They include roots or root like structures, a waxy cuticle that covers the surfaces of leaves and stems and limits the evaporation of water, and pores called stomata in leaves and stems that allow gas exchange but close when water is scarce, thus reducing water loss.

The ancestors of plants were photosynthetic single-celled organisms that gave rise to plants presumably lacked true roots, stems, leaves, and complex reproductive structures such as flowers.

Well, fortunately for archaeologists, all plants contain what are called phytoliths in their stems and leaves.

Many plants – one or more species of at least 68 different families – can secrete nectar even when they have no blossoms, because they bear extrafloral nectaries (structures that produce nectar) on stems, leaves, leaf stems, or other structures.

Succulent plants can store water in their leaves, in their stems, or in their roots.