Plants need the alkaline earth element ______ in photosynthesis.?

A) Magnesium
B) Calcium
C) Strontium
D) Barium

Answer:
It's magnesium. It's part of the chemical structure of chlorophyll.
a) Magnesium
b) calcium
A is needed but its not an alkaline so its B. But, this looks like a trick question so make it A
It's magnesium, which is part of the cycle of carbon fixation. And magnesium is an alkaline earth (Group II) element.

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