Which micronutrient is required for splitting of water molecule during photosynthesis?
Molybdenum
Magnesium
Copper
Manganese
The process of photosynthesis involves the splitting of water molecules, which is also known as photolysis. This step is crucial for the production of oxygen and the transfer of electrons. Among the various micronutrients, manganese (Mn) plays a vital role in this process. It is involved in the water-splitting complex of photosystem II and is essential for the stabilization of the right structure of this protein complex. Without manganese, the photolysis of water in photosynthesis does not occur efficiently, which hampers the entire photosynthetic process. Therefore, manganese is the correct micronutrient required for the splitting of water molecules during photosynthesis.
Micronutrient | Role in Photosynthesis |
---|---|
Molybdenum | Involved in nitrogen metabolism |
Magnesium | Central atom in chlorophyll |
Copper | Plays a role in electron transport chain |
Manganese | Essential for the water-splitting complex |
A sphere of radius R is cut from a larger solid sphere of radius 2R as shown in the figure. The ratio of the moment of inertia of the smaller sphere to that of the rest part of the sphere about the Y-axis is :
Predict the major product $ P $ in the following sequence of reactions:
(i) HBr, benzoyl peroxide
(ii) KCN
(iii) Na(Hg), $C_{2}H_{5}OH$
AB is a part of an electrical circuit (see figure). The potential difference \(V_A - V_B\), at the instant when current \(i = 2\) A and is increasing at a rate of 1 amp/second is: