Question

according to this diagram, which two species are the most closely related?
cyphioideae and campanuloideae
cyphioideae and cyphocarpoideae
lobelioideae and nemacladodeae
cyphocarpoideae and lobelioideae

Explanation:

Step1: Understand the concept of phylogenetic trees

In a phylogenetic tree, the closer two branches split from a common node, the more closely related the species are.

Step2: Analyze each option

• Cyphioideae and Campanuloideae: They do not share the most recent common node compared to other pairs.
• Cyphioideae and Cyphocarpoideae: They do not share the most recent common node compared to other pairs.
• Lobelioideae and Nemacladodeae: They share the most recent common node.
• Cyphocarpoideae and Lobelioideae: They do not share the most recent common node compared to Lobelioideae and Nemacladodeae.

Answer:

Lobelioideae and Nemacladodeae