Which are the plants that can harness water from thin air?

a. Cactus

b. Pitcher Plant

c. Geraniums

d. Both a and b

ANSWER: Both a and b

Explanation:

Harvard scientists have designed a new material akin to organisms such as cacti, pitcher plants and desert beetles which harvest water from thin air. This is the first step towards developing a system that can collect water and guide it to reservoirs. While the Namib beetle collects water droplets on the bumps of its shell, the V shaped cactus spines move droplets into the body of the plant. Complex bioinspired approach involves the use of these natural systems and SLIPS/Slipper Liquid Infused Porous Surfaces Technology to collect and direct flow of water droplets that are condensed.