Plante Moran Mission, Benefits, and Work Culture Indeed.com Photosynthesis & Oxygen Production (Daytime) Most trees and plants produce oxygen during the day through photosynthesis, which requires sunlight. They absorb carbon dioxide (CO) and release oxygen (O). What Happens at Night? It's me again asking for help. My flaming sword bromeliad might need pruning. Can I prune the swords? should I cut from the bottom of the browning one or leave it? Ultimate Broccoli Growing Guide from Seed to Harvest A Guide to Planting Grass Seed in Spring Grasshopper Gardens