In legumes, Rhizobium bacteria are more commonly observed in the roots. The Rhizobium provided usable nitrogen while the plant in return provides shelter and food to the bacteria. What is the type of relationship between these both?Single choice. (1 Point)

(a) Symbiotic, as both benefit each other for food.

(b) Competition, as both compete for atmospheric nitrogen.

(c) Parasitic, as Rhizobium consumes food prepared by plants.

(d) Saprophytic, as Rhizobium decomposes the roots of the plant and feed on them.​

(a) Symbiotic, as both benefit each other for food

Explanation:

Symbiosis is a close relationship between two species in which at least one species benefits. For the other species, the relationship may be positive, negative, or neutral. There are three basic types of symbiosis: mutualism, commensalism, and parasitism.

Mutualism is a symbiotic relationship in which both species benefit. An example of mutualism involves goby fish and shrimp. The nearly blind shrimp and the fish spend most of their time together. The shrimp maintains a burrow in the sand in which both the fish and shrimp live. When a predator comes near, the fish touches the shrimp with its tail as a warning. Then, both fish and shrimp retreat to the burrow until the predator is gone. From their relationship, the shrimp gets a warning of approaching danger. The fish gets a safe retreat and a place to lay its eggs.

Commensalism is a symbiotic relationship in which one species benefits while the other species is not affected. One species typically uses the other for a purpose other than food. For example, mites attach themselves to larger flying insects to get a “free ride.” Hermit crabs use the shells of dead snails for homes.

Parasitism is a symbiotic relationship in which one species (the parasite) benefits while the other species (the host) is harmed. Many species of animals are parasites, at least during some stage of their life. Most species are also hosts to one or more parasites.

So. we can easily say that   the relationship between them is symbiotic.