The both statements are true with these few points of mine.
Starch and cellulose have the same repeat units dependent on glucose, and are composed of the same glucose and monomer.
These substances are found mainly in plants. They are very large molecules (macro molecules) formed by the condensation of hundreds of simple sugar molecules called glucose.
Photosynthesis is the process by which green plants are able to use sunlight as source of energy to manufacture their own food (glucose).
These simple sugars (glucose) are transportable products formed in plant cells during photosynthesis. These can be converted to starch and stored as starch grains in plant cells or as cellulose found in the plant cell wall.
Therefore, the both statements are true.
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