In night, when photosynthesis is stopped, plants__________?

Related Mcqs:

1. The source of oxygen in photosynthesis is

   A. water
   B. salts
   C. minerals
   D. glucose

2. In which part of the Plant does photosynthesis take place?

   A. Flowers
   B. Roots
   C. Stem
   D. Leaves

   Submitted by: ABDUL HAYEE

3. Which of the following gases do plants and trees give out during photosynthesis?

   A. Hydrogen
   B. Nitrogen
   C. Oxygen
   D. Carbon dioxide

   Submitted by: ABDUL HAYEE

4. Which one of the following wavelengths of light is most effective in photosynthesis?

   A. Blue
   B. Green
   C. Orange
   D. Yellow

   Submitted by: Malik Asghar Hussain

5. Night vision is possible with the help of ___________?

   A. Red light
   B. Violet light
   C. Infrared Rays
   D. Ultra violet Light
   E. None of these

6. Permissible noise level at Residential area during night time is:

   A. 45 dB 
   B. 55 dB
   C. 75 dB
   D. 80 dB

   Submitted by: Malik Asghar Hussain

7. What is the date when day and night are equal?

   A. March 21 and December 24
   B. January 14 and September 23
   C. March 20 and September 23
   D. January 14 and June 22

   Submitted by: Mansoor Ahmed Suhag

8. Day and night are the results of__________?

   A. Earth rotation around its axis
   B. Earth revolution
   C. Earth rotation accompanied with its revolution.
   D. None of these

   Submitted by: Muhammad Arshad Anwer

9. Which types of waves are used in a night vision apparatus ?

   A. Radio Waves
   B. Micro Waves
   C. Infrared Waves
   D. Magnetic waves

   Submitted by: Haziq

10. The difference in the duration of day and night increases as one moves from:_________?

    A. West to East
    B. East and west of the prime meridian
    C. Equator to poles
    D. None of these

    Submitted by: SHAFQAT ALI SIYAL