The diagram shows a pyramid of numbers for a woodland food chain containing oak trees, herbivorous insects, insectivorous birds, and birds of prey.
Which of the following correctly identifies the trophic level and a representative organism represented by block Y?
Trophic level: Primary consumers; Representative organism: Herbivorous insects
Trophic level: Secondary consumers; Representative organism: Insectivorous birds
Trophic level: Secondary consumers; Representative organism: Herbivorous insects
Trophic level: Tertiary consumers; Representative organism: Birds of prey