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Post Fertilisation Events: Seed Video Lecture - NEET

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00:07 Seed
00:38 Question 1
00:39 Non-Albuminous and Albuminous Seed
01:16 Perisperm
01:32 True Seed
02:11 Seed Formation
02:36 Question 2
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FAQs on Post Fertilisation Events: Seed Video Lecture - NEET

1. What are the post-fertilization events in seed plants?
Ans. Post-fertilization events in seed plants include the development of the embryo, formation of endosperm, maturation of the ovule into a seed, and dispersal of the seed.
2. How does the embryo develop after fertilization in seed plants?
Ans. After fertilization, the zygote undergoes several divisions to form an embryo. It starts with the formation of the proembryo, followed by the development of the globular, heart-shaped, and then torpedo-shaped embryo.
3. What is the role of endosperm in post-fertilization events in seed plants?
Ans. Endosperm is a nutritive tissue that forms around the developing embryo. It provides nourishment to the growing embryo during its early stages of development and helps in its proper growth and maturation.
4. How does the ovule mature into a seed in post-fertilization events in seed plants?
Ans. After fertilization, the ovule undergoes changes to develop into a seed. The ovule wall becomes hard and forms the seed coat, while the inner tissues differentiate into the embryo and endosperm. The ovule also undergoes desiccation, reducing its water content and preparing it for dormancy.
5. How are seeds dispersed in post-fertilization events in seed plants?
Ans. Seeds are dispersed through various mechanisms such as wind, water, animals, and self-dispersal. Wind-dispersed seeds are lightweight with structures like wings or plumes to aid in dispersal. Water-dispersed seeds have buoyant adaptations. Animals can disperse seeds through ingestion and subsequent excretion, or by attaching seeds to their fur or feathers. Some plants have mechanisms that allow them to self-disperse their seeds.
Video Timeline
Video Timeline
arrow
00:07 Seed
00:38 Question 1
00:39 Non-Albuminous and Albuminous Seed
01:16 Perisperm
01:32 True Seed
02:11 Seed Formation
02:36 Question 2
More
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