
Refer to the given table that summarizes the interactions between two organisms (organism 1 and organism 2 ). Identify the types of interaction and select the correct answer.

(i) can be either predation or parasitism.
(ii) can be either commensalism or amensalism.
(iii) can be amensalism.
(iv) can be amensalism.

(ii) can be either commensalism or amensalism.
(iii) can be amensalism.
(iv) can be amensalism.


Important Questions on Organisms and Populations
Which type of interaction is being shown in the given figure?


Read the following statements and select the correct option.
Statement 1: The prickly pear cactus introduced into Australia in early 1920 s caused havoc by spreading rapidly into millions of hectares of rangeland.
Statement 2 : When certain exotic species are introduced into a geographical area, they become invasive and start spreading fast because the invaded land does not have its natural predators.




On the rocky sea coasts of Scotland, the larger and competitively superior barnacle Balanus dominates the intertidal area and excludes the smaller barnacle Chathamalus from that zone. Which kind of interaction is being depicted by this example?

