Embryonic Development
Biology ⇒ Reproduction and Development
Embryonic Development starts at 8 and continues till grade 12.
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Describe the main function of the umbilical cord during embryonic development.
Describe the role of the chorion in embryonic development.
Describe what happens during the process of cleavage in embryonic development.
Explain the difference between the terms 'embryo' and 'fetus'.
Explain why cell differentiation is important during embryonic development.
Explain why the process of implantation is important for embryonic development.
Name one organ that develops from the ectoderm.
Name the three primary germ layers formed during embryonic development.
During which stage does the embryo first show a distinct head and tail region?
(1) Zygote
(2) Morula
(3) Gastrula
(4) Blastula
Which of the following best describes gastrulation?
(1) Formation of the zygote
(2) Formation of three germ layers
(3) Implantation in the uterus
(4) Formation of the placenta
Which of the following best describes the function of the allantois in embryonic development?
(1) Gas exchange and waste removal
(2) Formation of the nervous system
(3) Production of hormones
(4) Formation of the heart
Which of the following best describes the function of the amniotic fluid?
(1) Provides oxygen
(2) Cushions and protects the embryo
(3) Forms the placenta
(4) Supplies nutrients
Fill in the blank: The __________ is the first stage of embryonic development after fertilization.
Fill in the blank: The __________ is the stage of embryonic development characterized by a hollow ball of cells.
Fill in the blank: The __________ is the stage of embryonic development when the embryo is a solid ball of cells.
Fill in the blank: The __________ is the structure that connects the embryo to the placenta.
True or False: All animals go through the same stages of embryonic development.
True or False: The blastocyst implants itself into the wall of the uterus.
True or False: The embryo is called a fetus after all major organs have formed.
True or False: The heart is the first functional organ to develop in the embryo.
