Final answer:
Common types of plants in areas with temperate climates include crops like wheat and barley, as well as their wild ancestors. Rice and wheat are important staple foods that require specific climate conditions for growth.
Step-by-step explanation:
The common types of plants that exist mostly in areas of the world with temperate climates include a range of crops and their wild ancestors, such as wheat and barley. These crops are important for human societies as they provide staple foods. For example, rice is the most important cultivated plant, feeding more people than any other crop. It requires warm, moist conditions for growth and is grown worldwide in tropical and warm temperate habitats. Wheat is another major crop that grows in temperate climates.