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WorksheetsDevelopment of Animals (Grade 11)
Total questions: 10
Worksheet time: 6mins
The central fluid-filled cavity of a blastocoel is called a blastula.
TRUE
FALSE
What do you call the production of tissues and organs?
(a)
When does a zygote begin its embryonic development?
Fertilization
Before fertilization
After fertilization
A blastula is a hollow ball of cells comprised of cells called blastomeres.
TRUE
FALSE
During the cleavage stage, there is an increase in cell size and cell number.
TRUE
FALSE
Epithelial cells of the skin arose from what germ layer?
ENDODERM
ECTODERM
MESODERM
In this stage of development, cellular rearrangement is facilitated by directed cell and tissue movements such as invagination and involution.
Cleavage
Blastulation
Gastrulation
Organogenesis
Another term for 'Cell Death'
(a)
Erythrocytes or RBCs in the circulatory system belong to what germ layer?
ENDODERM
ECTODERM
MESODERM
A normal baby develops for how many months inside a mother's womb?
7
9
10
12
