CELLS QUESTIONS

The diagram below shows the structure of a chloroplast.  
   

 
a.   Name the process that occurs in chloroplasts  
      (1)
b   Name the structures labeled.  
  (i) X.  
      (1)
  (ii) Y  
      (1)
c   Give two similarities in structure between chloroplasts and mitochondria.  
       
       
      (2)
d   Some scientists think that chloroplasts and mitochondria have evolved from intracellular symbiotic bacteria. Explain why  
    the structures of mitochondria and chloroplasts can account for this hypothesis.  
       
       
      (2)

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