The answer is B I'm pretty sure of it.
Answer:
They have helical thickening of lignin in their walls to prevent collapse
Explanation:
the primary function of Xylem and its conducting vessels tracheids is to provide support and tranport water and minerals in plants.
Xylem vessels have layers of dead materials in the walls called LIGNIN. Lignin is a polymer; a very strong, hard materials that stop water passage through it,because it contains dead cells,
Therefore the presence of deposit of these strong impermeable, ligified walls in its walls prevent its collapse during mass flow of water of transpiration pull.
Answer: status symbols
Explanation:
Status symbols are simply referred to as the objects that shows the social class or economic position of a person.
With regards to the information given in the question, we can see that the pointy-toed boots, a silk scarf, a pair of Wranglers, and a cowboy hat were used to show the status of the cowboy.
Water is attracted to ions, such as sodium, potassium, phosphate, and chloride ions. Maintenance of normal intracellular fluid volume depends largely on the intracellular concentration of potassium and phosphate ions. Maintenance of extracellular water volume on the other hand depends primarily on the extracellular concentration of sodium and chloride ions.
From top to bottom: Earth, Saturn, Mars, Uranus, Venus, Jupiter
