Step 1: Understanding interspecific competition.
Interspecific competition occurs between individuals of different species competing for the same resources. Step 2: Analysis of given options.
Tree and orchid show commensalism.
Two Peepal trees represent intraspecific competition.
Tiger and camel do not compete for the same resources. Step 3: Correct identification.
Lions and leopards are different species competing for similar prey in the same habitat. Step 4: Conclusion.
Hence, interspecific competition is seen between lions and leopards.