Embryonic Development
Biology ⇒ Reproduction and Development
Embryonic Development starts at 8 and continues till grade 12.
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Describe the difference between totipotent and pluripotent cells in embryonic development.
Describe the main function of the allantois in mammalian embryos.
Describe the role of apoptosis in embryonic development.
Describe the role of the trophoblast in early embryonic development.
Explain the importance of cell signaling during embryonic development.
Explain the significance of induction in embryonic development.
Explain the significance of the primitive streak in embryonic development.
Explain why the process of cleavage does not increase the overall size of the embryo.
Which of the following best describes the function of the placenta?
(1) Produces gametes
(2) Facilitates exchange of nutrients and wastes
(3) Forms the neural tube
(4) Initiates cleavage
Which of the following best describes the morula?
(1) A hollow ball of cells
(2) A solid ball of cells
(3) A single-celled zygote
(4) A three-layered structure
Which of the following is NOT an extraembryonic membrane?
(1) Amnion
(2) Chorion
(3) Endoderm
(4) Allantois
Which of the following is NOT derived from the ectoderm?
(1) Skin
(2) Nervous system
(3) Muscles
(4) Hair
Fill in the blank: The __________ is a rod-like structure that provides support in the early embryo and induces neural tube formation.
Fill in the blank: The __________ is the fluid-filled cavity within the blastula.
Fill in the blank: The __________ is the outermost extraembryonic membrane in mammals.
Fill in the blank: The process by which the blastocyst attaches to and embeds in the uterine wall is called __________.
True or False: Cleavage divisions increase the overall size of the embryo.
True or False: Gastrulation results in the formation of three germ layers in the embryo.
True or False: The amniotic fluid protects the embryo from mechanical shocks.
True or False: The blastocyst contains an inner cell mass that will develop into the embryo.
