Choose the word which is different from the rest.

Mosses
Lichens
Ferns
Cacti

The answer is D. Cacti.

Moss, lichens, and ferns are all non-vascular plants, which means they do not have a vascular system to transport water and nutrients. Cacti, on the other hand, are vascular plants.

Moss is a small, green plant that grows in moist, shady places. It has a simple body with no roots, stems, or leaves. Moss reproduces by spores.

Lichens are a combination of algae and fungi that live together in a symbiotic relationship. The algae provides the fungus with food, and the fungus provides the algae with protection. Lichens can grow on a variety of surfaces, including rocks, trees, and soil.

Ferns are a type of plant that has large, feathery leaves. They reproduce by spores. Ferns can grow in a variety of habitats, including forests, meadows, and even deserts.

Cacti are a type of plant that has thick, fleshy stems that are covered in spines. They are adapted to living in dry, desert environments. Cacti store water in their stems and have a thick, waxy coating that helps to prevent water loss.

Cacti are the only option that is not a non-vascular plant.