Question

Assertion :Chlorine is absorbed as $C{l}^{-}$ ions. Its precise role is not well known. However with $N{a}^{+}$ and $K^{+}$, it help in determining the solute concentration and anion-cation balance is cells. Reason: Chlorine plays an important role in photosynthesis and takes part in the water splitting reaction, thus releasing $O_2$.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Both Assertion and Reason are incorrect

Answer 1

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

• Chlorine is present in the plant body in the range of 100-300 ppm. It is required by plants in traces. It is found in the chloride form in the soil.
• Plants absorb them from the soil in chloride anion form. Rains also provide chlorine to the plants.
• It acts as an enzyme activator for enzyme induced photolysis of water and transfer of electrons from water to pigment system II of photosynthesis.
• It plays a vital role in stomatal movement and ion balancing. So, the correct option is A.