Q.Match the following and choose the correct combination from the options given below.
Column I: A. Mutalism, B. Commensalism, C. Parasitism, D. Competition, E. Predation
Column II: 1. Lion and deer, 2. Round worm and man, 3. Birds compete with squirrels for nuts, 4. Sea anemone on hermit crab, 5. Bernacles attached to Whales.

Step 1. Match Column I (interaction type) to the correct example in Column II using the chapter's own worked examples for each interaction.

Step 2. A. Mutualism pairs with the sea anemone living on the hermit crab's shell (item 4) — both partners benefit, the crab is protected and the anemone gets transported and fed.

Step 3. B. Commensalism pairs with barnacles attached to whales (item 5) — the barnacles benefit from transport and filter-feeding while the whale is unaffected.

Step 4. C. Parasitism pairs with the roundworm in man (item 2) — the roundworm (Ascaris) benefits at the expense of its human host. …

Recall the chapter's own named example for each of the five interaction types and …

• Confusing the commensalism example (barnacles on whale) with the mutualism example (sea anemone on hermit crab), s …