Assertion: Some essential elements are called structural element of cells
Reason: These essential elements are the components of certain biomolecules.

Options

A. If both assertio and reason are true and reason is the correct explanation of assertion
B. if both assertion and reason are true but reason is not the correct explanation of assertion
C. if assertion is true but reason is false
D. if both assertion and reason are false

Answer

A

Explanation

Some essential elements plays a structural role in plants. These essential elements are carbon, hydrogen, oxygen and nitrogen. They are building blocks of macromolecules that form the bulk of plant body carbon and hydrogen are components of all organic substances. many of them also contain oxytgen nitrogen is a constituent of amino acids, proteins, nucleic acids, chlorophyll, auxin, cytokinins and vitamins.