Answer:
Opuntia is a xerophytic
plant, in which leaves are modified into spine to reduce the rate oftranspiration
and they do not perform the photosynthesis at all.
So function of
photosynthesis in Opuntia plant is performed by stem which is thick fleshyand
flattened structure containing chlorophyll and stores food. It is known as
phylloclade.
Sometimes,
the stem, i.e., about one internode long modifies into a leaf like structure to
carry out photosynthesis, as in Asparagus. They are present in axil of scale
leaves while true leaves are reduced to scales or spines.
Similarly in
some plants, roots become assimilatory as in the case of Trapa and Tinospora.
These roots
grow outside the soil, develop chlorophyll in them and perform photosynthesis.
You need to login to perform this action.
You will be redirected in
3 sec