What Did A T-Rex Taste Like - Online Activity Biology Worksheets (Page 3 of 3) in pdf

What Did A T-Rex Taste Like - Online Activity Biology Worksheets Page 3

Purpose:

Use the cladogram and data on inherited features to make hypotheses about what T. rex was

like.

Materials needed:

Cladogram and Additional Data

Your completed Features Table

Cladogram

To the right is a simple cladogram indicating the

proposed relationship among the caiman,

parrot, and T. rex.

Additional data

This data table indicates the presence or absence of eleven additional features for the caiman

and the parrot. Notice that the information about the T. rex has not been filled in. You will need

to make that determination based upon what you have learned.

Instructions:

Examine the questions below. For at least three of the questions:

1. Decide if it is possible to answer the question with the data

provided (the cladogram and data tables).

2. If it is not possible, what information is needed to be able to

answer the question?

3. If it is possible, what kind of hypothesis would you make?

What is the evidence for your statement? In your justification,

make sure that you include information about common

ancestors and shared inherited features. What other

evidence would you look for that would support or refute your

hypothesis?

What other kinds of questions might be answered using the

cladogram and data tables?

Questions: (Pick at least 3)

Did T. rex have an amniotic egg?

Was T. rex warm-blooded or cold-blooded?

Could T. rex have had feathers?

Did T. rex have color vision?

How many chambers were there in T. rex's heart?

Did T. rex sing to its offspring?

What Did A T-Rex Taste Like - Online Activity Biology Worksheets Page 3