AP BIOLOGY

Detailed explanation-1: -Phosphorus is a critical component of nucleotides, which are used to make DNA and RNA. In addition, phosphorus is also needed in the formation of the phospholipid bilayer observed in cell membranes. Thus, phosphorus is an essential nutrient required for both plant and animal growth.

Detailed explanation-2: -Phosphorus is an essential nutrient for animals and plants. It plays a critical role in cell development and is a key component of molecules that store energy, such as ATP (adenosine triphosphate), DNA and lipids (fats and oils). Insufficient phosphorus in the soil can result in a decreased crop yield.

Detailed explanation-3: -Animals absorb phosphates by eating plants or plant-eating animals. Phosphorus cycles through plants and animals much faster than it does through rocks and sediments. When animals and plants die, phosphates will return to the soils or oceans again during decay.

Detailed explanation-4: -Functions of Phosphorus in Plants Phosphorus promotes early root growth, winter hardiness, and seed formation, stimulates tillering, and increases water use efficiency.

Detailed explanation-5: -Adding phosphorus to soil low in available phosphorus promotes root growth and winter hardiness, stimulates tillering, and often hastens maturity.