23. When a soil has reached maximum water retentive capacity a. Plants can uptake water at the maximum rate b. Water movement by unsaturated flow is slightly reduced c. Plant roots may be unable to respire d. Gravitational pull may be ineffective 24. Soil water movement by saturated flow is associated with a. Soil water potentials between -15 bar and 0.3bar b. Matric potentials lower than 0.3bar c. Flooded soil conditions d. Water potentials greater than -0.3 bar 25. The rate of water movement by unsaturated flow is mainly influenced by a. The fraction of macropores in the soil b. Soil texture c. Soil structure d. Soil water potential gradients 26. Active absorption of water by plant roots is associated with a. Periods or low water demand b. Periods of high water demand c. Saline soil conditions d. High ambient temperatures.

1. 23. When a soil has reached maximum water retentive capacity a. Plants can uptake water at the
maximum rate b. Water movement by unsaturated flow is slightly reduced c. Plant roots may be
unable to respire d. Gravitational pull may be ineffective 24. Soil water movement by saturated
flow is associated with a. Soil water potentials between -15 bar and 0.3bar b. Matric potentials
lower than 0.3bar c. Flooded soil conditions d. Water potentials greater than -0.3 bar 25. The rate
of water movement by unsaturated flow is mainly influenced by a. The fraction of macropores in
the soil b. Soil texture c. Soil structure d. Soil water potential gradients 26. Active absorption of
water by plant roots is associated with a. Periods or low water demand b. Periods of high water
demand c. Saline soil conditions d. High ambient temperatures