Photosynthesis in Higher Plants- Quiz 3

Light reaction / photochemical phase includes –

• Absorption of light, water splitting, O₂ release

• ATP and NADPH₂ formation

• CO₂ fixation and glucose formation

• a and b

After removal of carbon, the oxygen in carbon dioxide ends up in –

• Air

• Sugar

• Water molecules

• The sugar and water molecules

Which helped in confirming that oxygen evolved in photosynthesis comes from water

• H₂ ¹⁸O

• ¹⁴CO²

• ¹⁵NO₃

• ³H₂O

Because of properties of chlorophyll, plants need adequate ________ light to grow properly –

• Green

• Blue and red

• Infrared

• Ultraviolet

Photosystem I (PS I) and photosystem II (PSII) are named –

• In the sequence of their discovery

• In the sequence in which they function during light reaction

• In the sequence of their positions

• In the sequence of e transfer

The light harvesting complex (LHC) is made up of –

• One molecule of Chl a

• Very few molecules of Chl a

• Hundreds of pigment molecules bound to proteins

• Chl a + Chl c + protein + DNA

Phosphorylation occurs in –

• Mitochondria

• Chloroplast

• Both a and b

• Cell wall

Flow of electrons in non-cyclic photophosphorylation is –

• From PSI to PSII

• unidirectional

• 
• Bidirectional
  

Photosynthesis is –

• Endergonic, photochemical, anabolic and reductive process

• Exergonic, reductive and catabolic process

• Exergonic reductive and anabolic process

• Exergonic, chemosynthetic process

What happens during the light phase of photosynthesis?

• ADP is hydrolysed and NADPH oxidised

• ADP is phosphorylated and NADP reduced

• ATP is hydrolysed and NADPH oxidised

• ATP is hydrolysed and NADP reduced