|How do plants obtain oxygen for respiration during
|Question Date: 2015-06-11|
If you are referring to cell respiration, then
yes, you are right that plants need oxygen at
night as well as during the day. Gasses like
O2 and CO2 pass in and out
of plants through stomata which are pores in the
leaves that open and close to regulate gas
flow. Usually, these pores are closed at night
to prevent water loss, but they aren't sealed
perfectly and some plants open their stomata at
night in fact (cacti). Gasses are able to seep
into and out of the leaves at night under normal
circumstances. This is how O2 diffuses
into plant tissue.
Plants have holes in their leaves called
"stomata" which open at night to take in
oxygen. They open primarily at night because
during the day, they would lose too much water
from evaporation. When it is cooler at night, they
open these holes to take in oxygen. They still
have respiration during the day (the holes are
slightly open), but they primarily photosynthesize
in the day.
Plants have pores in their leaves called
stomata, which they open up at night in order
to let the air flow into the leaf. Leaves contain
spaces inside of them that work similarly to
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