The correct options are
B Tiger, cheetah, lion
C Large fishes, heron, crocodiles
Tertiary consumer is the third level of consumer in a food chain. They are mostly carnivores. They feed on plant eating primary consumers or secondary consumers which feed on primary consumers.
Tiger, cheetah and lion are examples of terrestrial tertiary consumers. Large fishes, heron and crocodiles are examples of aquatic tertiary consumers.
Ant, grasshopper and butterfly are primary consumers.
Ulothrix, hydrilla and pistia are producers of the aquatic ecosystem.