What percentage of light reaching the earth is used in photosynthesis?

Related Mcqs:

1. Photosynthesis carried out by terrestrial plants is _________ of total photosynthesis?

   A. 1-2%
   B. 5%
   C. 10%
   D. 20%

2. Photosynthesis is process in which ________ compounds of carbon (CO2) and hydrogen (H2O) are reduced to carbohydrate like (glucose) using light energy.

   A. Organic
   B. Energy rich
   C. Energy poor
   D. Reduced

3. Visible light used in photosynthesis ranges from:__________?

   A. 300 – 700 nm in wavelength
   B. 350 – 750 nm in wavelength
   C. 380 – 750 nm in wavelength
   D. 390 – 790 nm in wavelength.

4. There are __________ types of nutrients needed by plants besides light to carry out photosynthesis

   A. Two
   B. Three
   C. Four
   D. Five

5. Most of the photosynthesis on earth is carried by__________?

   A. Kelps
   B. Gymnosperms
   C. Angiosperms
   D. Algae

6. Terrestrial plants carry out ________ of total photosynthesis on the earth?

   A. 10%
   B. 20%
   C. 50%
   D. None of these

   Submitted by: Muzaffar Ali

7. The percentage of light absorbed by the leaf is ___________?

   A. 20%
   B. 15%
   C. 10%
   D. 1%

8. The trioses which are intermediate in respiration and photosynthesis are_______________?

   A. Glyceraldehydes
   B. Dihydroxy acetone
   C. Both of these
   D. None of these

9. Which of the following manufactures carbohydrates by the process of photosynthesis?

   A. chloroplast
   B. chromoplast
   C. leucoplast
   D. All of these

   Submitted by: Muhammad Nawaz

10. In plants, which of the following is a waste product produced both during photosynthesis and respiration?

    A. CO2
    B. H2O
    C. O2
    D. Both A and B