According to the pressure-flow hypothesis, which of the following statements is not true?
-water moves from the xylem to the phloem of a plant
-water is necessary for sugars to move through phloem
-ploem is able to move sugars in either direction to meet the nutritional needs of plants
-the movement of water into a nutrient-rich region of the phloem decreases the pressure in that region

Abasketball star covers 2.65 m horizontally in a jump to dunk the ball. his motion through space can be modeled precisely as that of a particle at his center of mass. his center of mass is at elevation 1.02 m when he leaves the floor. it reaches a maximum height of 1.90 m above the floor and is at elevation 0.910 m when he touches down again. (a) determine his time of flight (his "hang time"). (b) determine his horizontal velocity at the instant of takeoff. (c) determine his vertical velocity at the instant of takeoff. (d) determine his takeoff angle. (e) for comparison, determine the hang time of a whitetail deer making a jump with center-of-mass elevations yi = 1.20 m, ymax = 2.45 m, and yf = 0.750 m.