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Detailed Overview: Post-Fertilisation Events Video Lecture | Biology for Grade 12

124 videos|210 docs|207 tests

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Video Timeline
Video Timeline
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00:01 Introduction
00:46 Zygote Formation
01:00 Question 1
01:55 Life Cycle of the Organism
02:27 Life Cycle of the Organism: Haplontic
03:00 Question 2
03:53 Life Cycle of the Organism: Diplontic
05:10 Life Cycle of the Organism: Haplo-Diplontic
05:40 Environment Exposed
06:13 Embryogenesis
07:00 Question 3
07:21 Development of Zygote
11:11 Test Yourself
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FAQs on Detailed Overview: Post-Fertilisation Events Video Lecture - Biology for Grade 12

1. What are the post-fertilisation events in NEET?
Ans. Post-fertilisation events in NEET refer to the series of processes that occur after fertilization of the egg by sperm. These events include implantation, embryonic development, placenta formation, and fetal development.
2. How does implantation occur after fertilization in NEET?
Ans. Implantation occurs after fertilization in NEET when the blastocyst (a hollow ball of cells) attaches to the uterine wall. The trophoblast cells of the blastocyst invade the endometrium and secrete enzymes to facilitate attachment and subsequent implantation.
3. What is the role of the placenta in post-fertilisation events in NEET?
Ans. The placenta plays a crucial role in post-fertilisation events in NEET. It acts as a connection between the mother and the developing embryo/fetus. The placenta allows for exchange of nutrients, oxygen, and waste products between the maternal blood and the developing embryo/fetus.
4. How does embryonic development occur after fertilization in NEET?
Ans. After fertilization in NEET, embryonic development begins with the formation of the zygote. The zygote undergoes a series of cell divisions called cleavage, forming a solid ball of cells called a morula. The morula then develops into a fluid-filled structure known as a blastocyst, which implants into the uterine wall and eventually develops into an embryo.
5. What are the key stages of fetal development in post-fertilisation events in NEET?
Ans. Fetal development in post-fertilisation events in NEET involves several key stages. These stages include the formation of major organ systems, such as the nervous system, cardiovascular system, and respiratory system. It also includes the development of external features, such as limbs and facial structures. The fetal development culminates in the growth and maturation of all organ systems, preparing the fetus for birth.
124 videos|210 docs|207 tests
Video Timeline
Video Timeline
arrow
00:01 Introduction
00:46 Zygote Formation
01:00 Question 1
01:55 Life Cycle of the Organism
02:27 Life Cycle of the Organism: Haplontic
03:00 Question 2
03:53 Life Cycle of the Organism: Diplontic
05:10 Life Cycle of the Organism: Haplo-Diplontic
05:40 Environment Exposed
06:13 Embryogenesis
07:00 Question 3
07:21 Development of Zygote
11:11 Test Yourself
More
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