Question

fill in the blank 8 points
organisms can be organized by their similarities and differences. the incomplete cladogram shows the relationship between some invertebrates based on their body structures.
invertebrate cladogram
worm spider ant cricket fly dragonfly
segmented body
use the drop - down menus to construct an argument about the development of six legs in invertebrates, based on the body structures shown.
the development of six legs should be placed at letter choose your answer... on the cladogram because the body structure is present only in organisms choose your answer... that point on the cladogram.

Explanation:

A cladogram is a diagram that shows evolutionary relationships among organisms. In this invertebrate cladogram, we need to determine where the development of six legs should be placed. Spiders have eight legs, while ants, crickets, flies, and dragonflies (the organisms after the point where six - legs would be a derived trait) have six legs. The point (letter) on the cladogram that separates the organisms without six legs (spider) from those with six legs (ant, cricket, fly, dragonfly) is the point where the six - leg trait evolved.
Looking at the cladogram structure, the letter \(E\) is the point that branches off to include only the organisms (ant, cricket, fly, dragonfly) that have six legs.

Answer:

The development of six legs should be placed at letter \(E\) on the cladogram because the body structure (six legs) is present only in organisms (ant, cricket, fly, dragonfly) that branch from point \(E\) on the cladogram.