8. Why do some plants
adapted to a dry environment
open their stomata only at
night?

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
During the day in habitats the guard
cells flaccid and the stomata
; concurrently carbon dioxide is
to pass to participate
diurnal photosynthesis. Some plants
dry regions solve this
through the method of carbon
dioxide fixation. At , when water
loss by is lower, the
stomata , carbon dioxide enters
and is stored within the
tissues. During the day stored gas is
mobilized be used in photosynthesis.