The thinking habits of your brain and how they could work
d bc (a b c and d) r the same to make a tidepool
1. The cell wall has lignin (hard substance): to prevent the xylem vessel from collapsing and withstand high pressure.
2. The absence of protoplasm (nucleus + cytoplasm) and cross wall: to allow water to move through the lumen easily.
Hope it helped!
It can also be called a column.
