Photosynthesis in Higher Plants- Quiz 2

Which of the following statements is false?

• Usually chloroplasts align themselves along the walls of mesophyll cells, so that they get optimum quantity of incident light

• Within chloroplast there is a membranous system consisting of grana, stromal lamellae and stroma

• There is division of labour within chloroplast

• In grana CO₂ is fixed

The membranous system of grana is responsible for –

• Trapping light energy but not ATP and NADPH2 formation

• Trapping light energy and also for fixation of CO₂

• For ATP and NADPH₂ formation but not for light trapping

• For light capturing and also for NADPH₂ and ATP formation

In stroma –

• Enzymatic reactions incorporate CO₂ into the plant leading to ATP and NADH₂ formation

• Enzymatic reactions incorporate CO2 into plant leading to the synthesis of sugar, which in turn forms starch

• Light energy is captured to form glucose

• ATP and NADPH2 are splitted and H₂O and O₂ comes out

Leaf pigments, (Chl a, Chl b, Xanthophyll and carotene) can be separated by –

• Paper chromatography

• Electrophoresis

• X-ray diffusion

• ELISA test

Which one is not an accessory photosynthetic pigment?

• Chl b

• Xanthophyll

• Carotene

• Chl a

Why are the absorption spectrum of Chl a and the action spectrum of photosynthesis are identical?

• Chl a absorbs both red and blue light maximumly

• Chl a reflects blue light

• Accessory pigments contribute energy to drive photosynthesis

• Different wave lengths of light have different energy

If green plant cells are incubated with O18-labelled CO2, what molecule will become radioactive as the cells are exposed to light?

• ATP

• Water

• Sugar

• O₂

Oxygen is not produced during photosynthesis by

• Cycas

• Nostoc

• Green sulphur bacteria

• Chara

Which of the following is not a product of light reaction of photosynthesis?

• NADPH

• NADH

• ATP

• Oxygen

One scientist cultured Cladophora in a suspension of Azotobacter and illuminated the culture by splitting light through a prism. He observed that bacteria accumulated mainly in the region of :

• Blue and red light

• Violet and green light

• Indigo and green light

• Orange and yellow light