Explain three ways in which the structure of the xylem vessels makes them well-adapted to their function.

The end walls are removed from each end, forming an uninterrupted tube, so water can pass through easily.Their walls are thickened with a woody substance called lignin, which helps to support the xylem vessels and stops them collapsing inwards.There are small pits in the cell wall where is no lignin so water and ions can move into and out of the vessels.

HW

Related Biology A Level answers

All answers ▸

Describe and explain the function of the loop of henle and suggest how its structure may differ in organisms adapted to a desiccated environment.


How do expiration and inspiration occur by the action of the lungs?


For a dihybrid cross, how do you find out what proportion of offspring are expected to have a certain genotype?


What is the difference between haemodialysis and peritoneal dialysis?