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WorksheetsEmbryology
Total questions: 18
Worksheet time: 9mins
The study of embryos and their development is called
embryology
biology
avianology
ecology
What are some common similarities that all embryos share? select ALL that apply
tails at some point of development
similar shape
eye spots that develop into eyes
all develop into mammals
WHAT DOES MEIOSIS CREATE?
CHROMOSOMES
GAMETES
DNA
TRAITS
THE GAMETES ARE CONSIDERED TO HAVE ONE HALF OF THE GENETIC INFO SO IT IS CALL
DIPLOID (2N)
DIPLOID (N)
HAPLOID (2N)
HAPLOID (N)
FERTILZATION IS ...
THE FUSION OF A HAPLOID EGG AND SPERM
THE FUSION OF A DIPLOID EGG AND SPERM
THE FUSION OF A HAPLOID EGG AND DIPLOID SPERM
THE FUSION OF TWO EGGS
What is the placenta?
The fluid-filled sac that surrounds the fetus
The organ that connects the fetus to the mother's blood supply
The structure that forms around the fertilised egg
The structure that nourishes the egg before implantation
Which of the following stages starts the process of embryonic development?
Fertilization
implanation
menstruation
ovulation
When the cells of a zygote change during development to serve a specific function. For example, they become skin cells, nerve cells, etc.
fertilization
evolution
differentiation
The attachment of the uterine by a blastocyst is called......
implantation
fertilization
amniotic sac
blastocyst
Which event occurs first?
Fertilization of egg by sperm to form zygote in fallopian tube.
Implantation of blastula into uterine lining.
Gastrulation of gastrula to form germ layers.
Cell differentiation to give rise to specialized cells.
Which event occurs second?
Fertilization of egg by sperm to form zygote in fallopian tube.
Implantation of blastula into uterine lining.
Gastrulation of gastrula to form germ layers.
Cell differentiation to give rise to specialized cells.
Which event occurs third?
Fertilization of egg by sperm to form zygote in fallopian tube.
Implantation of blastula into uterine lining.
Gastrulation of gastrula to form germ layers.
Cell differentiation to give rise to specialized cells.
Which event occurs last?
Fertilization of egg by sperm to form zygote in fallopian tube.
Implantation of blastula into uterine lining.
Gastrulation of gastrula to form germ layers.
Cell differentiation to give rise to specialized cells.
Select the correct order of embryonic stages.
Zygote, cleavages, morula, blastula, gastrula, fetus
Blastula, cleavages, fetus, gastrula, morula, zygote
Zygote, blastula, morula, cleavages, fetus, gastrula
What is formed after fertilization?
Zygote
Morula
Blastula
Gastrula
After cleavage, a solid ball of cells is formed called a:
Morula
Blastula
Gastrula
Zygote
A hollow ball of cells filled with fluid. The inner cells become the organism and the outer cells form the placenta.
Blastula
Morula
Gastrula
Zygote
Stage where germ layers start to form (before cells truly differentiate).
Gastrula
Blastula
Morula
Zygote
