Q. Which type of symbiotic relationship is characterized by organisms that are dependent on each other for survival? Answer:
Obligate symbiosis
Notes: Obligate symbiosis is a relationship where at least one organism cannot survive without the other. For example, Clownfish and sea anemones exhibit this relationship, the anemone provides protection while the Clownfish offers nutrients. In contrast, facultative symbiosis allows for survival independently, as seen in certain lichen algae.