Question

a cladogram is a branching diagram that represents suggested evolutionary relationships among organisms based on the presence of unique traits. A scientist discovers a new organism that lacks limbs and does not have a true backbone. The organism lays eggs to produce offspring and has a cartilage-like rod known as a notochord running along its dorsal surface. On the cladogram below, select the species to which the newly discovered organism is most closely related.

Answer 1

rhesus monkey (edmentum answer)

Step-by-step explanation:

A cladogram represents the suggested ancestry of different organisms based on the presence of unique traits. The marks along the bottom line of the cladogram represent the relative time at which specific traits appeared. An organism that emerges higher up the cladogram will possess the traits of the organisms below it unless the traits are lost due to subsequent adaptations.

Based on the cladogram, an organism that has paired legs and mammary glands and gives placental birth would be most closely related to the rhesus monkey.

Answer 2

The correct option is lamprey.

Step-by-step explanation:

Lamprey is a kind of fish which lack jaws. They lack a true skeleton, but the cartilage is present in them. Due to lack of proper backbone, they look similar to snails. The lamprey reproduces by laying eggs in the water. Larvae tend to develop from these eggs. The lamprey releases its eggs only in freshwater. Only the mature lamprey live in the sea to act as a parasite and take food. For laying eggs, it travels to freshwater.