Give the biological terms for the following:
(a) Respiratory openings found on the stem of woody plants.
(b) Exudation of sap from the injured parts of the plant.

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Solution

(a) Lenticels:
Lenticels are the respiratory openings found on the stem of woody plants.
These are the open pores present on the stem of woody plants that help them to respire by a gaseous exchange.
They are porous and have large intercellular spaces in the periderm of the bark.
(b) Bleeding:
Bleeding is the exudation of sap from the injured parts of the plant.
It is aided by the root pressure of the plants.

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