Copy and complete the following passage describing the adaptations of rice for growing with its roots submerged in water.

The stems and leaves of rice plants have very large ............. in tissue called ............., which allow oxygen to pass from the air to the ............. . The roots are very shallow, giving them access to the higher concentration of ............. in surface water. When oxygen concentrations fall, the roots can oxidise glucose through ............. ............. .

This produces ............., which is toxic. However, the root cells are tolerant of higher concentrations of this than are most cells and they also contain high concentrations of the enzyme ............. to break it down.