Q.Tabulate and analysis of two species population interaction.

Step 1. Amensalism is scored (--, 0): the most powerful or large organism inhibits the growth of other, weaker organisms, without itself gaining anything — example: Cat and Rat.

Step 2. Mutualism is scored (+, +): the interaction is favourable to both species and is obligatory — example: crocodile and bird.

Step 3. Commensalism is scored (+, 0): population 1, the commensal, benefits, while population 2, the host, is not affected — example: sucker fish on shark.

Step 4. Competition is scored (--, --): each species directly inhibits the other — example: birds competing with squirrels for nuts and seeds.

Step 5. Parasitism is scored (+, --): population 1, the parasite, generally smaller than population 2, the host, benefits at the host's expense — example: Ascaris and tapeworm in the human digestive tract. …

Reproduce the six-row interaction table with each interaction's plus/minus scoring, the general natur …

• Mixing up the scoring for parasitism and predation, which share the same (+, --) notation but differ in the relative size of the two …