How does leaf structure facilitate photosynthesis

The mesophyll can be further broken down into two layers, the palisade layer and the spongy layer, both of which are packed with chloroplasts, the factories of photosynthesis. ... These intracellular spaces, along with the moist surface of mesophyll cells, facilitate the exchange of carbon dioxide and oxygen.

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.