Embryo Development Webquest
Name: _________________________
Block: _________
Go to www.augulewiczanatomy.wikispaces.com for websites
Early stages of development tutorial:
>Pre-quiz:
1. In animal development, the process of cleavage can best be described as:
a. Meiosis
b. Mitosis
c. Differentiation
d. Fetilization
2. The cells created by cleavage are called:
a. Blastulas
b. Blastomeres
c. Blastocoels
d. Blastopores
3. Which of the following are the three germs layers contained in the gastrula?
a.
b.
c.
d.
Ectoderm, mesoderm, echinoderm
ectoderm, mesoderm, epidermis
ectoderm, mesoderm, endoderm
ectotherm, mesoderm, endoderm
>Begin Animation
4. What is a fertilized egg called?
5. What is cleavage?
6. Think back to biology: What is the difference between mitosis and meiosis?
7. What are the cells produced from cleavage called?
8. After cleavage is complete, the embryo becomes a ________________________.
9. The blastocoel is a ____________________________________.
10. The next stage in development is called __________________________________.
11. What is produced during gastrulation?
12. What happens during organogenesis?
>Post-Quiz
1. Which of the following stages of development is defined by the 3 embryonic tissue
layers?
a. gastrula
b. zygote
c. embryo
d. blastula
2.
a.
b.
c.
What is happening to a cell during differentiation?
It is taking on its specialized function by becoming a specific cell type
It is dividing to produce cell with one-half number of original chromosomes
It is dividing to produce a cell with same number of chromosomes
Embryo Development Webquest
Name: _________________________
Block: _________
d. Material is moving across the cell’s membrane as it goes from region of high
concentration to low concentration
3. Which of the following stages of development is defined by the process of organogenesis?
a. the blastula b. cleavage
c. early to late embryo stages d. gastrula
4. True or False? The liver, pancreas, and the lining of the respiratory and digestive tracts
will develop from the endoderm.
a. True
b. False
>Watch 2nd video: http://www.youtube.com/watch?v=k_9MTZgAhv0
1. What are gametes?
2. What does haploid mean?
3. What is a morula?
4. What is a blastula?
5. How are animals like a tube?
6. Gastrulation starts at the ___________________________ where cells start to invaginate.
7. If the mouth is formed from the blastopore opening it is called a ____________________________.
If the anus is formed from the blastopore opening it is called a _______________________________.
8. What is the difference between diploblastic and triploblastic?
 Watch 3rd video: http://www.youtube.com/watch?v=UgT5rUQ9EmQ
Human Development