Features of desert plant:
The leaves are either absent or are small to avoid excess water loss.
The stems are flattened and green to perform photosynthesis.
The roots go deep into the soils to absorb maximum water.
The stem is covered with a waxy layer to avoid water loss.
The stomata are sunken so that water loss can be prevented.
Final Answer:
The modification in morphology is in such a way that it prevents water loss.