The following questions refer to the phylogenetic tree shown in Figure 34.2.

Figure 34.2
-Which of these numbers represents ectotherms that were able to fly?
A) 1
B) 2
C) 7
D) 8
E) It is not possible to say.

Question

The following questions refer to the phylogenetic tree shown in Figure 34.2.
  
Figure 34.2
-Which of these numbers represents ectotherms that were able to fly?
A) 1 
B) 2 
C) 7 
D) 8 
E) It is not possible to say.

Quizplus · Accepted Answer

Ectotherms are animals that rely on external sources of heat to regulate their body temperature. Flying requires a lot of energy, which ectotherms cannot generate internally. Therefore, it is not possible for ectotherms to fly.

The Following Questions Refer to the Phylogenetic Tree Shown in Figure