- 1. Embryology is a branch of biology that studies the development of embryos from fertilization to birth. It involves understanding how a single cell transforms into a complex organism through processes such as cell division, differentiation, and morphogenesis. Embryologists observe and examine the various stages of development in different species to gain insights into the fundamental mechanisms that drive embryonic growth and patterning. By studying embryology, scientists can unravel the mysteries of life and gain valuable knowledge that can be applied in fields such as medicine, genetics, and developmental biology.
What is the term for the outermost layer of cells in the early embryo that later forms the skin and nervous system?
A) Epiblast
B) Endoderm
C) Mesoderm
D) Ectoderm
- 2. Which structure connects the fetus to the placenta and allows for nutrient exchange and waste removal?
A) Yolk sac
B) Umbilical cord
C) Amniotic fluid
D) Chorion
- 3. What is the term for the process in which cells become specialized to perform specific functions?
A) Migration
B) Differentiation
C) Proliferation
D) Gastrulation
- 4. At what stage of development does the embryo implant into the wall of the uterus?
A) Morula stage
B) Gastrula stage
C) Neurula stage
D) Blastocyst stage
- 5. What is the term for the process by which the embryo develops three primary germ layers?
A) Neurulation
B) Implantation
C) Blastulation
D) Gastrulation
- 6. What is the name of the developmental stage that follows the morula but precedes the blastocyst?
A) Neurula
B) Zygote
C) Gastrula
D) Blastula
- 7. Which germ layer gives rise to the muscles, skeleton, and circulatory system in the embryo?
A) Epiblast
B) Endoderm
C) Ectoderm
D) Mesoderm
- 8. What is the term for the process of cell division that occurs in the early embryo to increase cell number?
A) Cleavage
B) Differentiation
C) Proliferation
D) Migration
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