Embryonic Development: Blastula, Gastrula and Fate of Three Germ Layers
Embryonic Development: Blastula, Gastrula and Fate of Three Germ Layers: Overview
This topic covers concepts such as cleavage of zygote, morula, gastrulation, germ layers and ectoderm.
Important Questions on Embryonic Development: Blastula, Gastrula and Fate of Three Germ Layers
The embryonic structure that gets implanted in the uterine wall of a human female is
Which of the following is label “A”
Arteries carry oxygenated blood except
Assertion: Holoblastic cleavage with almost equal sized blastomeres is a characteristic of placental animals.
Reason: Eggs of most mammals, including humans, are of centrolecithal type.
The best definition of the process of gastrulation is that it is a process where the:
Given below are statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Endometrium is necessary for implantation of blastocyst.
Reason R: In the absence of fertilization, the corpus luteum degenerates that causes disintegration of endometrium.
In the light of the above statements, choose the correct answer from the options given below:
Formation of three germinal layers is significance of:
Explain embryogenesis.
The cleavage divisions in humans is :
Which blastomere known as morula?
Which of the following statement is correct?
Explain about the blastopore and the embryonic development.
What is trophoblast? Give it's function.
What is indicated by 'e' in the figure?
How many germinal layers does embryo consist of initially, after implantation?
Match the following and choose the correct options:
| A. | Trophoblast | i. | Embedding of blastocyst in the endometrium |
| B. | Cleavage | ii. | Group of cells that would differentiate as embryo |
| C. | Inner cell mass | iii. | Outer layer of blastocyst attached to the endometrium |
| D. | Implantation | iv. | Mitotic division of zygote |
Which statement is false?
What is the role of endoderm?
Define endoderm.
What is the role of mesoderm?
