Question

When Didinia and Paramecia are in same test tube, Didinia engulf all the Paramecia and then die of starvation. Didinia are the _______.

• A. predator
• B. competitor
• C. prey
• D. native species

Answer 1

The correct option is A

predator

Predators are organisms that use another organism as food. Here didinia consumed all the paramecia, therefore they are predators and paramecia are the prey. Competitors are organisms that are fighting for the same resources, such as food or space. Native species are organisms that are native to a given habitat.