leek
No an onion, or at least the bit of it you cut up to eat, is a root. It grows under the soild and will also contain the "seed" of the plant.
Onion bulb is not photosynthetic.So chloroplasts are absent.
The time of cell division usually relates to the life span of a plant or animal. For onion root tips, the length of the cell division is related to the life span of the onion plant.
Filtration, tubular reabsorption, tubular secretion
Tubular World was created in 1994.
The total amount of a substance that enters the tubular portion of the nephron each minute is said to be tubular load.
From the Tubular bells album by Mike Oldfield
Tubular reabsorption
The Tubular bells (or Chimes) originated in the 1880s
The Best of Tubular Bells was created in 1972.
Tubular Bells was created on 1973-05-25.