Q. A scientist is conducting experiments with regards to photosynthesis. The scientist takes three plants, which are identical and feeds and waters them in exactly the same way. The only difference is the amount of sunlight that each plant is given.


  1. Plant number one is given 10 hours a day sunlight
  2. Plant number two is given 4 hours a day sunlight
  3. Plant number three is given 7 hours a day sunlight.


The plants were treated in this way for exactly 7 days, and not exposed to any other form of light except the sunlight as stated above. Which plant out of the three would you consider to produce the most glucose in the time given?


Q. A scientist is examining cells taken from the same plant. In the first cell sample the scientist counts an average of 26 chloroplasts, in the second sample there is an average of 57 chloroplasts and in the third sample there is an average of zero chloroplasts.


(a) From the information above suggest which of the three cell specimens would be likely to have the highest rate of photosynthesis.

(b) Suggest where the cell containing zero chloroplasts may have come from,, explain your answer.



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