Fungi are different from plants because

Fungi do not contains chlorophyll and thus are unable to photosynthesise and produce their own food while on the other hand plants contain chlorophyll and they photosynthesise to produce food.

Fungi are either parasites or decomposers and depend on others for their food.

Fungi differ from plants and they have their own kingdom due to the many reasons. Plants produce their own food by the process of photosynthesis while fungi do not take part in photosynthesis. They are heterotrophs, meaning they depend on other organisms for the supply of food. While plants are autotrophs. They make their own food with the help of sunlight and water.

Another reason for Fungi which differs from the plant are that Fungi do not have chlorophyll while plants have. The plant's cell wall is made up of cellulose while fungi have a cell wall made up of a protein called chitin. They do not reproduce by seeds. fungi also reproduce asexually by nature, for example by budding in yeast or spore production in mushrooms.

the oldest known insects are believed to live around 400 millions ago as suggested by the fossil records.   some plants having woody stems also evolved during this time.

after the evolution of insects the first four legged species or the tetrapods evolved in shallow freshwater habitats from the intermediate species approximately 397 million years ago. the tetrapods went on conquering the land giving rise to amphibians, reptiles, mammals and birds.

the major split in tetrapods first occurred 340 million years ago branching off from amphibians.

363 million years ago when the carboniferous period began the insects started roaming on land and taking flights, following which the four limbed tetrapods adapted in the terrestrial habitat.