mutualism
No, organisms that are closer together on a phylogenetic tree are more closely related because they share a more recent common ancestor. The further apart two organisms are on the tree, the more distant their relationship.
The evolutionary relationship of a specific species to other organisms on a phylogenetic tree node shows how closely related that species is to other organisms based on their common ancestry. The closer the species is on the tree node, the more closely related they are in terms of evolution.
symbiosis
Scientists can tell whether organisms are closely related by comparing their DNA. This will allow then to look at various traits and features so as to compare the relationship between organisms.
A cladogram is organized based on shared characteristics among different organisms. Organisms with more shared characteristics are grouped together more closely on the cladogram, indicating a closer evolutionary relationship. The branches or nodes on a cladogram represent points where new traits or characteristics evolved.
symbiosis
If you mean when two different organisms live closely together and help each other survive, then it's symbiosis.
The members of a species are more closely associated compared to individuals of different species within a population. Members of a population are more closely related compared to individuals from different populations within the same species.
When both organisms benefit from living closely together, it is known as mutualism. In this symbiotic relationship, both species derive some form of benefit, such as protection, food, or resources, from the association. Mutualism is a common ecological strategy in nature that helps both species thrive in their environment.
In the classification of organisms, family is a higher taxonomic rank than genus, and genus is a higher rank than species. Organisms that belong to the same genus are more closely related than those in the same family, and organisms in the same species are the most closely related.
Symbiotic relationships involve two different species living closely together and benefiting from each other, such as in mutualism, commensalism, and parasitism. Non-symbiotic relationships do not involve this close interaction, and the species do not rely on each other for survival or benefit.
Organisms that are closely related to rabbits include; horses and turtles