Download App

STD 11 - 11. photosynthesis in higher plants — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 11. photosynthesis in higher plants1 Mark
MCQ
What happen to the chloroplast pigment when they absorb light?
  • A
    They become reduced
  • ✓
    They become excited
  • C
    They lose potential energy
  • D
    Calvin cycle is triggered
✓

Answer

Correct option: B.
They become excited
b
Light reaction begins with the $PS-II$. In photosystem-$II$ the reaction centre chlorophyll-a absorb $680$ $nm$. wavelength of red light causing electrons to become excited and jump into orbit further from the nucleus. These electrons are picked up by an electron acceptor, which passes them to an electron system consisting of cytochromes

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from STD 11 - 11. photosynthesis in higher plants→STD 11 - 11. photosynthesis in higher plants — all question types→BIOLOGY STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

Heart wood or duramen is
→
At the begining of this stage, the chromosomes that have reached their respectives poles decondense and lose thier individuality
→
In gymnosperms, the ovule is naked because
→
$I.$ The adrenal cortex secretes many hormones called corticoids     $II.$ Corticoids involved in carbohydrate metabolism are called glucocorticoids      $III.$ Cortisol is main glucocorticoids   $IV.$ Aldosterone is the main mineralocorticoids

Select the correct combination from the given options

→
The first formed primary phloem is referred as ...$A$... The later formed primary phloem is referred as ...$B$...

Choose the correct combination of $A$ and $B$

→
Kelps are massive
→
Rhizopus belongs to:
→
The hormone that induces Labor Pain is :
→
Which one of the following blood cells is involved in antibody production?
→
Genus represents
→