Name: ALAQ HAMEED Date:
BIOL MISC Student Exploration: Cladograms Gizmos with a
the correct answers
Student Exploration: Cladograms
Vocabulary: adaptation, amino acid, amnion, artiodactyls, bipedal, clade, cladistics,
cladogram, convergent evolution, evolution, flower, mammary glands, molecular,
morphological, multicellular, parsimony, sagittal crest, phloem, selenodont teeth,
SNP, xylem
Prior Knowledge Questions (Do these BEFORE using the Gizmo.)
1. Look at the images below. Which two organisms do you think are most closely related?
Turtle and Deer
Worm Deer Turtle
2. Why do you think so? Because they both are vertebrates (have a backbone)
but the worm doesn’t.
Gizmo Warm-up
Cladistics is a method of hypothesizing the evolutionary
relationships between species. A cladogram is a branching
diagram that illustrates these relationships. For example, the
cladogram on the right shows that deer are more closely
related to turtles than to worms. In the Cladograms Gizmo,
you will use morphological (physical characteristics) and
molecular data to create cladograms.
To begin, make sure Plants is selected for the Organism group and Morphological is
selected for the Data type. Click on one of the characteristics to the left of the table
on the TABLE tab.
Information about the characteristic will be shown on the ORGANISM tab.
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8
, Using the information on the ORGANISM tab, describe each of the characteristics below.
• Xylem and phloem: Xylem and Phloem are tissues in plants that transport
water and solutes up the plant (phloem) and food down the plant (xylem).
• Flowers: A flower is a part of a plant containing reproductive organs (stamen
and carpel) surrounded by brightly colored petals.
• Multicellularity: A multicellular organism is composed of more than one cell.
201
8
BIOL MISC Student Exploration: Cladograms Gizmos with a
the correct answers
Student Exploration: Cladograms
Vocabulary: adaptation, amino acid, amnion, artiodactyls, bipedal, clade, cladistics,
cladogram, convergent evolution, evolution, flower, mammary glands, molecular,
morphological, multicellular, parsimony, sagittal crest, phloem, selenodont teeth,
SNP, xylem
Prior Knowledge Questions (Do these BEFORE using the Gizmo.)
1. Look at the images below. Which two organisms do you think are most closely related?
Turtle and Deer
Worm Deer Turtle
2. Why do you think so? Because they both are vertebrates (have a backbone)
but the worm doesn’t.
Gizmo Warm-up
Cladistics is a method of hypothesizing the evolutionary
relationships between species. A cladogram is a branching
diagram that illustrates these relationships. For example, the
cladogram on the right shows that deer are more closely
related to turtles than to worms. In the Cladograms Gizmo,
you will use morphological (physical characteristics) and
molecular data to create cladograms.
To begin, make sure Plants is selected for the Organism group and Morphological is
selected for the Data type. Click on one of the characteristics to the left of the table
on the TABLE tab.
Information about the characteristic will be shown on the ORGANISM tab.
201
8
, Using the information on the ORGANISM tab, describe each of the characteristics below.
• Xylem and phloem: Xylem and Phloem are tissues in plants that transport
water and solutes up the plant (phloem) and food down the plant (xylem).
• Flowers: A flower is a part of a plant containing reproductive organs (stamen
and carpel) surrounded by brightly colored petals.
• Multicellularity: A multicellular organism is composed of more than one cell.
201
8
