Question
Biology Question on Biomolecules
The major portion of the dry weight of plants comprises of:
A
Nitrogen, phosphorus and potassium
B
Calcium, magnesium and sulphur
C
Carbon, nitrogen and hydrogen
D
Carbon, hydrogen and oxygen
Answer
Carbon, hydrogen and oxygen
Explanation
Solution
Carbon, hydrogen, and oxygen make up the bulk of organic compounds in plants, such as carbohydrates, lipids, and proteins. These elements are essential for the structure and energy storage in plant cells. While other elements like nitrogen, phosphorus, potassium, calcium, magnesium, and sulfur are also important for plant growth, they are present in much smaller quantities compared to carbon, hydrogen, and oxygen.
So, the correct option is (D): Carbon, hydrogen and oxygen