Why do trees communicate through interconnecting root fungus?

Explanation:

Scientists call these mycorrhizal networks. The fine, hairlike root tips of trees join together with microscopic fungal filaments to form the basic links of the network, which appears to operate as a symbiotic relationship between trees and fungi, or perhaps an economic exchange.

The tree then exchanges these offerings from the fungi for a sugar-like substance the tree makes during photosynthesis. ... They do this by sending chemical, hormonal and electrical signals. Not only do they communicate underground, they send pheromones and other scent signals through the air.

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands

several tissues working together form an organ, and several organs together make up an organisms.

the group of cell that carries out special jobs are tissue.