Answer :
I'm not sure what the full question is but it sounds like a cactus.
The answer is cactus. Cactus have visible leaf modification that helps it conserve water in extremely dry conditions.
Cacti live in extreme dry locations. The leaves of cacti were modified to spines. The absence of leaves helps cacti to conserve water, as the leaves release water vapor during photosynthesis.
Cacti live in extreme dry locations. The leaves of cacti were modified to spines. The absence of leaves helps cacti to conserve water, as the leaves release water vapor during photosynthesis.