Herbicides are a broad category of pesticides that are used to get rid of undesirable plants like weeds and grasses that hinder the development and productivity of desired agricultural crops. Both 2,4-D and 2,4,5T are also known as 2,4-Dichlorophenoxyacetic acid and
- Herbicides like 2,4-D and 2,4,5-T are also referred to as auxin-type herbicides or plant growth regulators. Auxins are hormones that affect cell division and elongation in order to control cell growth.
- Auxins are required by plant cells in the proper concentration for growth and development. If auxin levels are too low, plant growth is not promoted at all, and if levels are too high, plant growth is excessively stimulated.
- Most grasses are not killed by 2,4-D and 2,4,5 T, but broadleaf weeds are. It moves to the plant's meristems after being absorbed through the leaves.
- These herbicides affect the tissues' cells, causing them to continually divide and proliferate. The plant finally dies as a result of this unchecked, unsustainable growth, which also causes stem curling and withering of the leaves.
Thus, by promoting cell division, these compounds act as herbicides.
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Answer:
<em>To get energy from stored glycogen (in the liver), the body must first convert the glycogen into </em><u><em>ATP.
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<em>(ATP stands for Adenosine Triphosphate . This is the energy currency of most cellular processes .)</em>
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<h3><u>Answer;</u></h3>
The above statement is <u>false </u>
<h3><u>Explanation</u>;</h3>
- The chordae tendineae are a group of tough, tendinous strands in the heart.
- <em><u>The chordae tendineae play a vital role in holding the atrioventricular valves in place while the heart is pumping blood</u></em>.
- The chordae tendineae connect the papillary muscles to the tricuspid valve and the mitral valve in the heart.
- Papillary muscles are located in the ventricles of the heart. They attach to the cusps of the atrioventricular valves via the chordae tendineae and contract to prevent inversion or prolapse of these valves.
Answer:
I and III
Explanation:
Acid deposition will decrease pH levels in lakes and rivers since it contaminates them and lowers their pH, and organisms may be affected by the increased acidity in their immediate surroundings, but aluminum has nothing to do with pH levels at all.
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