0
A herbicide that only kills certain types of plants as opposed to others. Most selective herbicides kill dicotyledonous plants, and do not affect monocotyledonous plants.
See related question
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
What is the function of sodium deoxycholate in media?
To act as a biological detergent that lyses cells. To act as a biological detergent that lyses cells.
Who introduced the selective breeding?
Selective breeding was first practiced by the Mesoamericans and Romans in prehistory. It is the act of breeding different species of animals and plants to get offspring with certain desired traits.
What controls geotropism and phototropism?
When the auxins in the plant act towards gravity... positive geotropism is wen the plant goes to the direction of gravity which would be downwards..negative geotropism would be upwards going against the natural gravity Phototropism is when the plant reacts towards the photosynthesis conditions where when light acts on the plant so the auxins burst and the plant bends towards light..this is positive phototropism...but when the plant goes against the direction of light it is then negative phototropism
Is naa an auxin?
Auxins are a class of plant growth substance (often called phytohormone or plant hormone). Auxins play an essential role in coordination of many growth and behavioral processes in the plant life cycle. Overview Auxins derive their name from the Greek word auxano (to grow). They were the first of the major plant hormones to be discovered and are a major coordinating signal in plant development. Their pattern of active transport through the plant is complex. They typically act in concert with (or opposition to) other plant hormones. For example, the ratio of auxin to cytokinin in certain plant tissues determines initiation of root versus shoot buds. Thus a plant can (as a whole) react on external conditions and adjust to them, without requiring a nervous system. On a molecular level, auxins have an aromatic ring and a carboxylic acid group (Taiz and Zeiger, 1998). The most important member of the auxin family is indole-3-acetic acid (IAA). It generates the majority of auxin effects in intact plants, and is the most potent native auxin. However, molecules of IAA are chemically labile in aqueous solution, so IAA is not used commercially as a plant growth regulator. * Naturally-occurring auxins include 4-chloro-indoleacetic acid, phenylacetic acid (PAA) and indole-3-butyric acid (IBA). * Synthetic auxin analogsinclude 1-naphthaleneacetic acid (NAA), 2,4-dichlorophenoxyacetic acid (2,4-D), and others. {| |+ Gallery of native auxins |- |indole-3-acetic acid (IAA)Indole-3-butyric acid (IBA)4-chloroindole-3-acetic acid (4-CI-IAA)2-phenylacetic acid (PAA)|+ Gallery of synthetic auxins2,4-Dichlorophenoxyacetic acid (2,4-D)α-Naphthalene acetic acid (α-NAA)2-Methoxy-3,6-dichlorobenzoic acid (dicamba)4-Amino-3,5,6-trichloropicolinic acid (tordon or picloram)2,4,5-Trichlorophenoxyacetic acid (2,4,5-T)α-(p-Chlorophenoxy)isobutyric acid (PCIB, an antiauxin)Auxins are often used to promote initiation of adventitious roots and are the active ingredient of the commercial preparations used in horticulture to root stem cuttings. They can also be used to promote uniform flowering, to promote fruit set, and to prevent premature fruit drop. Used in high doses, auxin stimulates the production of ethylene. Excess ethylene can inhibit elongation growth, cause leaves to fall (leaf abscission), and even kill the plant. Some synthetic auxins such as 2,4-D and 2,4,5-trichlorophenoxyacetic acid (2,4,5-T) have been used as herbicides. Broad-leaf plants (dicots) such as dandelions are much more susceptible to auxins than narrow-leaf plants (monocots) like grass and cereal crops. These synthetic auxins were the active agents in Agent Orange, a defoliant used extensively by American forces in the Vietnam War. |}
What are some insects that act as pollinators?
Some insects that act as pollinators are bees and butterflies those are the ones I know of...
Auxins act in response to?
Auxin stimulates growth
What is the selective act?
what is the selective act of 1917?
What is a result of the selective service act?
The selective service act is the requirement of all young men to register by the time they turn 18, with selective service, in the event of a draft.
How herbicide causes soil pollution?
Herbicides, also commonly known as weedkillers, are pesticides used to kill unwanted plants.[1] Selective herbicides kill specific targets while leaving the desired crop relatively unharmed. Some of these act by interfering with the growth of the weed and are often synthetic "imitations" of plant hormones. Herbicides used to clear waste ground, industrial sites, railways and railway embankments are non-selective and kill all plant material with which they come into contact. Smaller quantities are used in forestry, pasture systems, and management of areas set aside as wildlife habitat.Some plants produce natural herbicides, such as the genus Juglans (walnuts), or the tree of heaven; such action of natural herbicides, and other related chemical interactions, is called allelopathy.Herbicides are widely used in agriculture and in landscape turf management. In the U.S., they account for about 70% of all agricultural pesticide use.[1]
Define Selective Service Act?
The Selective Service Act is a law in the United States that requires all male citizens and immigrants aged 18 to 25 to register with the Selective Service System. In the event of a national emergency, this system can be used to draft individuals into the military.
How did Americans respond to the selective service act?
In 1917, the selective service act was passed. The selective service was the draft. In the United States, the young men felt it was against the 13th amendment.
What helped interventionists get Congress to pass the Selective Service Act?
The signing of the tripartite pact helped interventionists get Congress to pass the Selective Service Act.
Some opponents of the draft claimed that the selective service act violated which part of the US Constitution?
13th amendment
Why was the Selective Service Act necessary?
the selective service act was necessary because during world war 1, america did not have much of an army, so they eventually had to start drafting men age's 18 or older, into the army. This drafting was called the selective service act. :)
What required men to register with the government for random military service?
The Selective Service Act, although the definition you give of it is a bit misleading.
What helped interventional list get Congress to pass the selective service act?
The signing of the tripartite pact helped interventionists get Congress to pass the Selective Service Act.
What is the selective service act?
The Selective Service Act was put in place to allow the United States government to assemble an army through conscription in order to enter into World War I.
