We can infer from, the passage that our need for decorative plants …………

Most of the plants used for the decoration of rooms are
exotic in origin and there arc several reasons for this.
First, there is the question of climate: plants from warm
regions of the world are more luxuriant and more
colourful and further, their leaves are generally
persistent while most of the plants in our country lose
their leaves in winter. Besides, we feel the need of
decorative plants when all nature around us is bare.