BSCS Biology: A Molecular Approach

Chapter 10: Animal Growth and Development

Key Events of Development

1.
Sperm and egg cells collectively are known as ____.
A)zygotes
B)gametes
C)embryos
D)cytoplasm
2.
The process by which embryonic cells divide and begin to develop unique characteristics is called what?
A)fertilization
B)differentiation
C)activation
D)segmentation
3.
The inner layer of a gastrula, the endoderm, is usually a tube that will eventually develop into what?
A)the skin and nervous system
B)the heart and nerves
C)the trachea and lungs
D)the lining of the digestive system
4.
In vertebrate development, the ____ is a stiff rod that develops into part of the animal's backbone.
A)gastrula
B)blastula
C)notochord
D)neural tube
5.
The development of most new animals begins with what event, depicted here?

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A)metamorphosis
B)fertilization
C)differentiation
D)gastrulation
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