Answer :
Acacia plants often have ants of the genus pseudomymex associated with them. Removal of ant colonies from individuals of the bullhorn acacia species results in change in acacia is their growth is considerably stunted.
What is mutualism?
A type of contact known as mutualism occurs when neither the host nor the symbiont experience any negative consequences. This collaboration may last for a longer or a shorter period of time. The term "mutualist" refers to the other members of the mutualism, which include the host and the little partner.
For instance, honey from acacia trees is used by ants to stay alive. Ants are the mutualists in this situation, and acacia plants are the hosts.
Acacia plants often have ants of the genus pseudomymex associated with them. Removal of ant colonies from individuals of the bullhorn acacia species results in change in acacia is their growth is considerably stunted. The acacia trees produce specialized structure to shelter and feed the colony and the ants in turn defend the trees against the herbivores. The relation between acacia plants and ants that live on them are mutualistic.
Hence the correct answer is their growth is considerably stunted.
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