Question

The element that is not very mobile and remains fixed to mitochondria and chloroplasts is(a) Potassium
(b) Calcium(c) Sulphur
(d) Iron

Answer 1

Hello friend

Calcium is immobile element which present mainly in cell wall.

Point to be noted is sulphur us still controversial because in chapter Mineral nutrition it is mentioned as immobile but in transport it is mentioned as mobile.

hope you understood