AP BIOLOGY

Detailed explanation-1: -Date palms are grown in the Canary Islands, northern Africa, the Middle East, Pakistan, India, Mexico, and the U.S. state of California. Dates have a long shelf life, and many varieties, including the common deglet noor, are often sold dried and processed.

Detailed explanation-2: -Date palm (Phoenix dactylifera L.) is a keystone species in the oasis ecosystem because it conditions the oasis microclimate by controlling air tem-perature, humidity and soil–water dynamics, making it suitable for agriculture (de Grenade, 2013).

Detailed explanation-3: -The most important plant in an oasis is the date palm (Phoenix dactylifera L.), which forms the upper layer. These palm trees provide shade for smaller understory trees like apricots, dates, figs, olives, and peach trees, which form the middle layer.

Detailed explanation-4: -Overall, results indicate that date palm roots shape endophytic communities that are capable to promote plant growth under drought conditions, thereby contributing an essential ecological service to the entire oasis ecosystem.

Detailed explanation-5: -The Date palm (Phoenix dactylifera L.) is grown throughout the arid and semiarid regions of the world, particularly in West Asia and North Africa. It is well adapted to the desert environment, where a dry and warm climate is important for fruit maturity and ripening.