Which one of the following statements is $INCORRECT$ regarding competition?

Which of the following relationships cannot be described as a negative interaction?

Select the correct option for the following organisms:
$I -$ Copepods,$II -$ Liver fluke,$III -$ Lice,$IV -$ Ticks,$V -$ Ascaris,$VI -$ Cuscuta
Ectoparasites $\quad\quad$ Endoparasites

Given below are two statements.
Statement $I$: Intraspecific competition occurs between organisms of the same population.
Statement $II$: Such interaction may be beneficial,harmful or neutral to the interacting individuals.
In the light of the above two statements,choose the correct option.

Study the four statements $(i-iv)$ given below and select the two correct ones out of them.
$(i)$ $A$ lion eating a deer and a sparrow feeding on grains are ecologically similar in being consumers.
$(ii)$ Predator star fish $Pisaster$ helps in maintaining species diversity of some invertebrates.
$(iii)$ Predators ultimately lead to the extinction of prey species.
$(iv)$ Production of chemicals such as nicotine,strychnine by the plants are metabolic disorders.
The two correct statements are

Identify the incorrect statement.