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Gizmos
Name: Excouent
Date:
Student Exploration: Embryo Development
Vocabulary: Blastula, stages, differentiation, ectoderm, embryo, embryology,
embryonic stem cells, endoderm, Carnegie fetus, gastrula, inner cell mass, mesoderm, morula, neurula,
primitive streak, trilaminar disk, zygote
Prior Knowledge Questions (Do these BEFORE using the Gizmo.)
1. The images below show embryos of different species at different stages of development.
Label the images below with 1-4 from least developed to most developed.
A MOUSE
C Human
D fish
B frog
2. Which image above do you think is a human?
Explain.
\ think is C
Gizmo Warm-up
and Gizmo, you will compare the development Embryo of animals
single cell to a multicellular fetus. In the of Development
Embryology is the study of the development embryos from a
sure COMPARE tab is selected.
learn the the details of mammalian development. different TO begin, be
1. What do the images have in common? they are an Single
CELLS
or
fertilized Click on the check box to turn on Scale bars and labels. You are observing the zygotes,
single cells, of five animals.
2. At this point, are you able to tell which animal is which? NO
Explain. some
OF the CGU Like the Human and mouse Louh
similar but you cannot toll it a mouse cou
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