In terms of organisms, photosynthesis occurs in autotrophes that contain the green pigment chlorophyll. This would include the entire plant kingdom, half of the Protista (the algae), & half the Moneran Kingdom (the blue-green algae).
A standard twin mattress is 39 by 75 inches. A king is 76 by 80 inches. This means that a headboard for a king bed is going to be about 76 inches or wider, plenty wide enough to go along the length of a twin bed. Headboards are often slightly wider than the bed for which they are made.
King size headboards are not a âone size fits allâ accessory. They do not come in a single standard size. In terms of width, the minimum is 6 feet, 4 inches to accommodate a king-size mattress. A typical width range for a king headboard measures 6 feet, 7 inches to 7 feet. Usually the style determines how wide a headboard can be.