A team of scientists discovered a naturally occurring gene in the poplar tree that enhances photosynthetic activity and ...

and a negative test for starch in the areas which lack chlorophyll. This is evidence that chlorophyll is required for photosynthesis. A plant can be ‘de-starched’ by leaving it in the dark for ...

Test the leaf for starch using the 4-step starch test. Make another drawing of the leaf. In this drawing show the areas of the leaf that tested positive and those that tested negative for starch.

THE distribution of carbon-14 in the glucose moiety of sucrose, glucose phosphate and starch formed from carbon-14 dioxide during short-time photosynthesis ... To test the validity of the latter ...