In magnesium-deficient plants the older leaves show more severe symptoms of chlorosis which is a yellowing of the leaves than younger leaves.What is the best explanation?

Question

Quizplus · Accepted Answer

Scarce magnesium is removed from older leaves and translocated to support younger, more active leaves. This is because older leaves are less active in terms of photosynthesis and growth, and hence require less magnesium than younger leaves. As a result, in magnesium-deficient plants, the available magnesium is translocated from older leaves to support the growth and functioning of younger leaves, which show less severe symptoms of chlorosis.

In Magnesium-Deficient Plants the Older Leaves Show More Severe Symptoms