Strong chlorosis is due to the deficiency of _____________ in plants?
Correct answer: B. Nitrogen
- A. Magnesium
- B. Nitrogen
- C. Potassium
- D. Phosphorus
Explanation
Nitrogen deficiency reduces chlorophyll formation, producing widespread or strong yellowing called chlorosis, especially in older leaves. Magnesium and iron deficiencies can also cause chlorosis, so students may choose magnesium because magnesium is part of chlorophyll or iron because iron is needed for chlorophyll formation.
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About Classification of Biological Molecules
Biological molecules are classified as carbohydrates, lipids, proteins and nucleic acids, with water, minerals and vitamins also supporting cellular processes. The key distinctions involve their monomers, chemical bonds, structures and functions, including glucose and starch, fatty acids and triglycerides, amino acids and polypeptides, and nucleotides in DNA and RNA.
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