Based on the hispaniolan phylogenetic tree, which of the following is the correct order of appearance of the ecomorphs on that island, from earliest to latest?

1. trunk-crown2. twig3. crown-giant4. trunk-ground

Trunk-crown

Twig

Crown-Giant

Trunk-Ground

Explanation:

The ectomorphs have some morphological similarity irrespective of their evolution in specific habitats. However, most of the ectomorphs have evolved from the four islands – Hispaniola, Cuba, Jamaica, and Puerto. So these ectomorphs have been classified based on habitat and morphology. The phylogeny tree depicts following order of evolution 1) Trunk-crown 2) Twig 3) Crown-Giant and 4) Trunk-Ground

The crown giant has the largest body length and the trunk ground has smallest body length. In terms of habitat, crown giant live in highest part of the trunk while trunk ground lives in the lower trunk and ground.

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.