Embryonic Development

The embryo layer that forms the skin and nervous tissue is the _____.

• endoderm

• mesoderm

• ectoderm

• deuterostome

The innermost layer of the blastocyst is the

• endoderm

• gastrula

• ectoderm

• mesoderm

______ implants itself into the lining of the uterus.

• blastual

• gastrula

• blastocyst

• morula

The fertilization of the human egg by the sperms takes place in:

• Ovary

• Oviduct

• Vagina

• Uterus

The attachment of the embryo to the uterus is called:

• Gestation

• Fertilization

• Implantation

• Menstruation

Skeletal and muscular systems are developed from:

• Ectoderm

• Endoderm

• Mesoderm

• Ectoderm and endoerm

Which of the following sequences represents the correct order of events in the formation of a human fetus?

• Zygote → Blastocyst → Embryo → Fertilization

• Fertilization → Zygote → Blastocyst → Embryo

• Blastocyst → Embryo → Differentiation → Zygote

• Fertilization → Growth → Differentiation → Zygote

Repeated cell divisions of the zygote during the earliest embryonic development is known as:___________.

• Fertilization

• Cleavage

• oogenesis

• spermatogensis

Tags

NGSS.HS-LS1-4

A process in which cells became specialized in structure and function.

• Genomics
• Enzyme
• Differentiation
• Clone

Tags

NGSS.HS-LS1-4

NGSS.HS-LS1-1

The process that folds an embryo's germ layers and is the earliest stage of the nervous system's development is known as...

• neurulation

• stimulation

• gastrulation

• excitation