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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
The trophoblast cells in contact with embryonal knob are called ___________.
Explain the process of early cleavage till the formation of morula.
Long answer question.
Explain the process by which zygote divides and re-divides to form the morula.
Name the embryonic layer from which heart, blood, and blood vessels develop.
Write an account of cleavage during embryonic development in humans.
Write a note on implantation.
Identify the correct order of human embryo development.
Which of the following is an endodermal derivative?
How many hours after fertilization does first cleavage occur?
____________ is derived from ectoderm.
____________ gets embedded in the endometrium of the uterus.
From which germinal layer are eyes derived?
Name the hormone secreted by placenta after implantation.
Which of the following is odd pair among those given below?
Observe the figure given below and identify the one showing formation of
- Epiblast
- Hypoblast
- Amniotic cavity
- Yolk sac
Define cleavage.
Morphogenetic movements occur during ______.
