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प्रश्न
Answer in one sentence.
Give two differences between blastula and gastrula.
Difference between blastulation and gastrulation.
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उत्तर
| Blastula | Gastrula | ||
| 1. | It is formed during the early mitotic division through the process of blastulation. | 1. | It is formed at a later stage through the process of gastrulation. |
| 2. | Blastula is formed from morula. | 2. | Gastrula is formed blastula. |
| 3. | It is formed through rapid mitotic divisions. | 3. | It is formed by slower mitotic divisions. |
| 4. | The cells do not move during the formation of the blastula. | 4. | The cells move through morphogenetic movement during the formation of the gastrula. |
| 5. | Germinal layers absent. | 5. | The formation of three germinal layers occurs. |
| 6. | Cells are undifferentiated. | 6. | Cells undergo differentiation |
Notes
Students should refer to the answer according to the question.
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संबंधित प्रश्न
Describe the structure of blastula.
Attachment of embryo to the wall of the uterus is known as ______.
Answer in one sentence.
Where does fertilization and implantation occur?
Answer in one sentence.
What is the difference between embryo and zygote?
Write an account of cleavage during embryonic development in humans.
Identify the correct order of human embryo development.
How many hours after fertilization does first cleavage occur?
What is the number of blastomeres formed after third cleavage?
____________ is derived from ectoderm.
From which germinal layer are eyes derived?
Identify the trophoblast cells which are in contact with the embryonal knob during blastulation.
Mention the names of any two organs each derived from ectoderm and mesoderm.
Observe the figure given below and identify the one showing formation of
- Epiblast
- Hypoblast
- Amniotic cavity
- Yolk sac
Name the germinal layer from which nervous system is derived.
Define cleavage.
Morphogenetic movements occur during ______.
