Question

Date palm and cactus plant can store water in them

Answer 1

yes, palm and cactus plant can store water in them.

Answer 2

Almost all cacti are succulents, meaning they have thickened, fleshy parts adapted to store water. Unlike many other succulents, the stem is the only part of most cacti where this vital process takes place. Most species of cacti have lost true leaves, retaining only spines, which are highly modified leaves.