In which of the following interactions are both organisms negatively affected?

Predators play an important role in:

Which of the following pairs is correctly matched?

The orchid $Ophrys$ employs 'sexual deceit' to get pollinated by a species of bee. One petal of its flower bears an uncanny resemblance to the female of the bee in size,colour,and markings. The male bee perceives it as the female and attempts to copulate with the flower. During this process,pollen grains are dusted on the male bee's body. What is this phenomenon called?

What is the term for an interaction where both organisms benefit and are essential for each other's survival?

Which type of interaction is seen between sea anemone and clown fish?