Answer:
please insert the chart or table 27.1
Guard cells are located in the leaf epidermis and pairs of guard cells surround and form stomatal pores, which regulate CO2 influx from the atmosphere into the leaves for photosynthetic carbon fixation.
Stomatal guard cells also regulate water loss of plants via transpiration to the atmosphere.
Autotroph is an organism that produces food on its own
Answer:
change their external environment
