Today's 1st question:
Subject : Science
Chap.: Soil
Question : Explain how plants is useful for development id soil...
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Answers
Plant roots tightly hold the soil..so its consequences is the erosion is occurring less..
plant and soil both act as a mutual friends..
Answer:
Plant growth requires a compatible relationship between the plant, the atmosphere, and the soil. The soil will provide a location, support, foundation, and nutrients for plant growth. The air provides some needed elements and eventually the dead plants return materials to the soil. Over 50 different factors enter into the relationship. Some cannot be modified very much, like relative humidity, but many, like soil texture, can be juggled by a producer. Profitable production is the result of careful juggling. One of the key factors that can be manipulated is nutrition supplied by elements. Twenty elements are considered essential for plant growth because they are involved in metabolic functions required in the life cycle of the plant. Some, like carbon (C), oxygen (O), and hydrogen (H), can come from the air. Nitrogen (N) is made available to the plant from the air and soil. But most of the needed elements that are nutrients for plants come from the soil. They are not all equally important but all play a role in plant growth. Most needed are nitrogen (N), phosphorus (P), potassium (K), and sulphur (S). The others are calcium (Ca), iron (Fe), magnesium (Mg), manganese (Mn), zinc (Zn), copper (Cu), boron (B), molybdenum (Mo), chlorine (Cl), sodium (Na), cobalt (Co), nickel (Ni), and silicon (Si). They will be discussed in the next objective. To remember all the twenty elements, some memorize the phrase: "C Hopkins cafe, mighty good mob comes in".