Here's why:

* They grow and develop: Plants increase in size and complexity over time.

* They reproduce: Plants produce seeds or spores to create new plants.

* They respond to stimuli: Plants react to changes in their environment, such as sunlight, water, and temperature.

* They require energy: Plants obtain energy through photosynthesis, using sunlight to create their own food.

* They are made up of cells: Plants, like all living things, are composed of cells.

While plants may not move around like animals, they still exhibit all the characteristics of life.