The question is incomplete as it does not have the options which are:
- thick xylem tissue to transport sugar
- leaves that supplement by trapping insects
- extensive shallow roots that absorb water
- more dermal tissue for food storage
Answer:
extensive shallow roots that absorb water
Step-by-step explanation:
The cactus plants is adapted to grow in the dry, arid and hot conditions. The main adaptations of this plants includes that the enough water must be absorbed from the soil, the water must be conserved in the plants and at the same time water is not lost into the atmosphere, the plant is protected from the herbivores and others.
In the given condition, if the plant is exposed to a rainfall in the arid condition in which the plant is not able to go underground and is absorbed at the surface then the plant will survive by its hallow roots which does not penetrate the soil but remains on the surface and will absorb the water.
Thus, the selected option is correct.