Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test General Science Biology

._________ metal activates the enzyme of respiration, photosynthesis and constitutes the structure of the chlorophyll.

1

Magnesium

2

Calcium

3

Sulphur

4

More than one of the above

5

None of the above

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