Difficult because it went against basically everything that was previously believed to be true
This can be known as the style. More specifically the pollen tube carried the pollen to the ovaries.
<u><em>Photosystem I</em></u> is found in the membrane facing the inside of the grana and <u><em>Photosystem II</em></u> is found in membrane facing the stroma
The sugar-phosphate backbone is an important structural component of DNA. It consists of 5-carbon deoxyribose sugars<span> and </span>phosphate<span> groups.
Hope this helps
Have a good Day</span>