Friday, October 21, 2011

Jessy Andrew's question

A flowering plant in a clay pot is placed in a window that has light shining through it most the day. The plant is provided with sufficient water and fertilizer.
  1. Describe daily and nightly events that occur in the plant's metabolism.
ANSWER-  In daylight plants carries out 
1.Photosynthesis, process in which light energy is captured, converted and stored in simple sugar molecule. This process occurs in chloroplasts in the leaves  It is a backbone process, in the sense that all life on earth depends on it’s functioning. 
6CO2 + 12 H2O + light energy -> C6H12O6 + 6O2 +6H2O
carbon        water                              glucose     oxygen   water
2.Respiration, process in which energy , CO2 , H2O is released from the glucose which was made through photosynthesis.
C6H12O6 + 6O2   -> 6CO2 + 12 H2O +energy

At nights only respiration is carried out by plants. It is said that plants release CO2 through respiration at night that is because in day plants take up much more carbon dioxide in photosynthesis than they give off in respiration.So overall we see that plants take up CO2 in day and releases in night.


  1. Describe the changes that would occur in the plant is you rotated it 180o degrees.
ANSWER-  If we rotate the the plants to 180 degrees , it will change the direction of the leaves .Leaves would change the direction and go towards the light and roots will go towards the gravity.

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