Cacti and succulents are types of plants that have adapted to arid or dry environments by developing specialised features for water storage. These plants are known for their fleshy, thick stems, often covered in spines or thorns, which help to reduce water loss and protect against herbivores. Succulents, on the other hand, encompass a broader category of plants that store water in their leaves, stems, or roots. These indoor plants come in various shapes, sizes, and colours, and can include houseplants like Aloe vera, ZZ plant, Crassula hottentot, and Snake plants.