Embryonic Development
Biology ⇒ Reproduction and Development
Embryonic Development starts at 8 and continues till grade 12.
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Describe the importance of gastrulation in embryonic development.
Describe the role of the chorion in embryonic development.
Describe the role of the yolk sac in embryonic development.
Explain the difference between cleavage and differentiation in embryonic development.
Explain why organogenesis is a critical stage in embryonic development.
Explain why the placenta is important for the survival of the embryo in mammals.
What is gastrulation?
What is the function of the allantois in embryonic development?
Which germ layer forms the nervous system in vertebrates?
(1) Ectoderm
(2) Mesoderm
(3) Endoderm
(4) Epidermis
Which of the following best describes differentiation?
(1) Cells dividing rapidly
(2) Cells becoming specialized for specific functions
(3) Formation of the blastula
(4) Attachment to the uterine wall
Which of the following best describes the morula stage?
(1) A hollow ball of cells
(2) A solid ball of cells
(3) A single cell
(4) A three-layered structure
Which of the following is NOT a function of the amnion?
(1) Protects the embryo from shocks
(2) Provides nutrients to the embryo
(3) Maintains a stable temperature
(4) Prevents dehydration of the embryo
Fill in the blank: The _______ is the structure that connects the embryo to the placenta.
Fill in the blank: The outermost membrane that surrounds the embryo in reptiles, birds, and mammals is called the _______.
Fill in the blank: The process by which cells become specialized in structure and function is called _______.
Fill in the blank: The process by which the embryo attaches to the uterine wall is called _______.
True or False: All animals develop from three germ layers.
True or False: The blastocyst implants itself into the wall of the uterus.
True or False: The neural tube forms from the ectoderm during embryonic development.
True or False: The notochord is formed from the mesoderm.
