Which of the following statements is true? Symbiosis refers to different organisms living together. Members of a symbiotic relationship cannot live without each other. A parasite is not in symbiosis with its host. Symbiosis refers to different organisms living together and benefiting from each other. At least one member must benefit in a symbiotic relationship.

At least one member must benefit in a symbiotic relationship.

Explanation:

Symbiosis generally refers to the interaction between two species of organisms that live closely together in the same environment. In symbiosis, different scenarios can play out, they are:

both organisms can benefits from the relationship i.e. mutualism

only one organism could benefit from the relationship, while causing harm to the other i.e. parasitism

only one organism benefits from the relationship, but no harm or damaged is caused to the other organism. i.e. commensalism.

From the above three scenarios highlighted above, we can see that at least, one member must benefit in the symbiotic relationship.

Invariably, among the statements given in the question, "At least one member must benefit in a symbiotic relationship" is the only statement that is TRUE.

helicase, i think thats it

answer-

the statement that f(x) = |x+a| + b has exactly one x-intercept is sometimes correct.

solution-

it solely depends on b, whether the function will have one or two or zero x intercept.

this plot of the given function, f(x) = |x+a| + b will be the basic absolute value graph i.e v shape, with vertex translated to (-a, b), instead of origin.

1-   if b is zero, the graph will have exactly one x-intercept, at x= -a

2- if b is positive, the whole graph will be above the x-axis, hence it will have no x-intercepts.

3- if b is negative, the graph will be below the x-axis, hence it will have two x-intercepts.

∴ the statement is sometimes true.