1. Tardigrade
  2. Question
  3. Biology
  4. Identify the correct match from the Columns given below. No. PS Reaction Centre Location Products synthesised during Z scheme i. PS I P700 Inner surface of thylakoid membrane. ATP ii. PS II P700 Outer surface of thylakoid membrane. NADPH iii. PS II P680 Inner surface of thylakoid membrane. ATP iv. PS I P680 Outer surface of thylakoid membrane. NADPH

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Q. Identify the correct match from the Columns given below.
No. PS Reaction Centre Location Products synthesised during Z scheme
$i.$ PS I $P700$ Inner surface of thylakoid membrane. ATP
$ii.$ PS II $P700$ Outer surface of thylakoid membrane. NADPH
$iii.$ PS II $P680$ Inner surface of thylakoid membrane. ATP
$iv.$ PS I $P680$ Outer surface of thylakoid membrane. NADPH

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Solution:

PS I and PS II are two types of photosystems. The photosystem PS II is known for absorbing red light at 680 nm and thus its reaction centre is P680 while PS I absorbs red light at wavelength 700 nm and has reaction centre P700.PS I is present on outer surface of thylakoid membrane and PS II on inner side of the thylakoid membrane. During non-cyclic photophosphorylation or Z scheme product produced by PS I is NADPH and product produced by PS II is ATP along with hydrolysis of water.