Question

why Agaricus is considered to be a non flowering, thallophyta belonging to fungus? ​

Answer 1

Non-flowering plants are those that do not produce flowers or seeds. They mainly reproduce using spores or fungi. The exception are gymnosperms that produce seeds, but not flowers. The most commonly seen are ferns, mosses, fungi and ornamental plants; but, there are many more examples. Fungi are small plants don't have chlorophyll which allows plants to convert sunlight into food (photosynthesis). Ferns and algae can synthesise food on their own.