Yes, pitcher plants give off oxygen.
Pitcher plants are green because they have green
chlorophyll molecules that help make oxygen from
Here's an interesting article about research
using pitcher plants to study plants and lakes and
water; the pitcher plant has a tiny 'lake' of
water inside its pitcher that's easier to
study than a whole lake:
Thank you for your question. I didn't know
about the research on pitcher plants, and I think
Yes, pitcher plants (and other meat-eating plants)
get their energy from the sun like any plant, and
to do that they give off oxygen as waste.
Pitcher plants eat insects not for the
energy contained in the insects' bodies, but for
certain elements: nitrogen, phosphorous, and
sulfur. Most plants get these elements from
the soil, but pitcher plants live in soils where
these elements are rare, so they need to get them
from in a different way. A pitcher plant living
in rich soil wouldn't even need to eat insects,
since again, they get their energy from the sun.
All plants give off oxygen! To produce
their energy, plants perform the process of
photosynthesis to convert sunlight into
sugar. Part of this process involves the
production of oxygen, which the plant releases to
the environment. Even though pitcher plants
trap and digest bugs, photosynthesis is their
source of energy. Instead of a source of
energy, the insects are a source of nutrients that
might not be present in the soil.
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