Evidences of Evolution Independent Practice

This diagram represent the bone structures of the front limbs of four different animals. What do the similarities of the structures suggest about these organisms?

• They evolved from a common ancestor

• They live for the same length of time

• They live in the same environment

• They grow at the same rate

Skeletal structures are common between two animals of different species. These structures probably exist because both species -

• have a common food source

• live in the same environment

• have survived until present time

• are related to a common ancestor

The drawings below show a turtle embryo and a chicken embryo. Which of the following statements is supported by the similarities between these embryos?

• The turtle is more advanced than the chicken

• The chicken has more offspring than the turtle

• The turtle and the chicken are similar as adults

• The chicken and the turtle share a common ancestor

(a)   structures are similar physical features in organisms that share a common ancestor.

The diagram below shows one example of an evolutionary line for birds. Which conclusion does the information in the diagram best support?

• Ichthyornis is still living today

• Most bird fossils found today are Saurischian dinosaurs

• Archaeoptryx and modern birds have a common ancestor

• All of these organisms evolved at the same time

A researcher is studying raccons and skunks. She wants to find out how closely these two mammals are related. Which of these characteristics would be best for her study?

• sequences of DNA

• reproductive habits

• movement of RNA

• physical appearance

Which statement describes the best evidence that two species share a recent common ancestor?

• The species are about the same size

• The species eat the same type of food

• The species live in the same ecosystem

• The species have similar DNA sequences

Use the informatio and the table to answer the following question: - Mammals, birds, modern reptiles, and theropod dinosaurs are vertebrates. According to the table, which of these vertebrates are MOST CLOSELY related?

• Mammals and modern reptiles

• Theropod dinosaurs and modern reptiles

• Mammals and theropod dinosaurs

• Birds and theropod dinosaurs

(a)   structures are is an anatomical features that no longer seem to have a purpose in the current form.

The law of superposition explains that the age of fossils is determined by their positioning in the rock layers. Which of these statements is correct?

• Fossils found at the bottom are younger than fossils found at the top.

• Fossils found at the top are older than fossils found at the bottom

• Fossils found toward the bottom are older than fossils found at the top

• Fossils found in the middle are the oldest