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At night in some plants, root pressure causes guttation or exudation of drops of xylem sap from the tips or edges of leaves. Root pressure is studied by removing the shoot of a plant near the soil level. Xylem sap will exude from the cut stem for hours or days due to root pressure. If a pressure gauge is attached to the cut stem, the root ...
But in winter, it’s best to repot houseplants indoors because tropical plants can be sensitive to even short periods of cold exposure. If you’re worried about the mess, lay some newspaper over ...
Root rot is a condition in which anoxic conditions in the soil or potting media around the roots of a plant cause them to rot. This occurs due to excessive standing water around the roots. [ 1 ] It is found in both indoor and outdoor plants, although it is more common in indoor plants due to overwatering, heavy potting media, or containers with ...
$2.99 at amazon.com. The Lion, the Witch, and the Wardrobe. The Chronicles of Narnia are a classic of children's literature for a reason, but particularly fitting for our winter books reading list ...
Urtica dioica is a dioecious, herbaceous, and perennial plant. It grows to 0.9 to 2 metres (3 to 7 feet) tall in the summer and dying down to the ground in winter. [6] It has widely spreading rhizomes and stolons, which are bright yellow, as are the roots.
Conopholis americana, the American cancer-root, bumeh or bear corn, is a perennial, [3] non-photosynthesizing (or "achlorophyllous") parasitic plant.It is from the family Orobanchaceae and more recently from the genus Conopholis but also listed as Orobanche, native but not endemic to North America.
According to the book Roots, Kunta Kinte was born circa 1750 in the Mandinka village of Jufureh, in the Gambia. He was raised in a Muslim family. [4] [5] In 1767, while Kunta was searching for wood to make a drum for himself, four men chased him, surrounded him, and took him captive. Kunta awoke to find himself blindfolded, gagged, bound, and a ...
Charles Darwin was one of the first to scientifically document that roots show positive gravitropism and stems show negative gravitropism. [1] That is, roots grow in the direction of gravitational pull (i.e., downward) and stems grow in the opposite direction (i.e., upwards). This behavior can be easily demonstrated with any potted plant.