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Biology : Sexual Reproduction In Flowering Plants
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Biology : Sexual Reproduction In Flowering Plants

22 Lessons | 4hr 41min. | State Board , CBSE & ICSE | Competitive exams like NEET , CET, Foundation
Created bystudi live
Last updated 12/2021
English
English [Auto],

What you'll learn

  • State the structure & function of the floral parts including: Sepal, petal, stamen, carpel.
  • State that the Pollen grain produces male gamete and define the terms: pollination, self- pollination with Outline methods of pollination including: cross-polli
  • Explain various techniques of outbreeding devices.
  • State that the Embryo sac produces an egg cell & polar nuclei.
  • Define the term: fertilisation.
  • Outline seed structure & function of following: testa, plumule, radicle, embryo, cotyledon
  • Explain development of embryo and seed. & food supply (endosperm or seed leaves)
  • Classify plants as monocotyledon or dicotyledon & distinguish between them.
  • Make reference to non-endospermic seed.
  • Outline fruit formation. Outline seedless fruit production
  • Define the term dormancy. State advantages of dormancy.
  • Explain importance of apospory for hybrid seed production.
  • Draw well labelled diagrams of of mega sporangium, microsporangium, various stages of mega and microsporogenesis, development of embryo and structure of seed.

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Course content

1 section • 22 lectures • 4h 40m total length

  • Introduction9:36
  • Structure of Flower17:04
  • Sexual Reproduction in Flowering Plants6:47
  • Before and After Fertilisation9:54
  • Male Sex Organ in Flower20:56
  • Microsporogenesis14:44
  • Pollen Grains13:47
  • More About Pollen Grains14:28
  • Female Sex Organ - Pistil15:43
  • Megasporogenesis8:37
  • Embryo Sac Formation14:14
  • Pollination9:39
  • Agents of Pollination11:03
  • Outbreeding Devices11:55
  • Pollen - Pistil Interaction10:07
  • Double Fertilisation12:18
  • Endosperm Formation14:47
  • Embryogeny22:25
  • Embryogeny - Monocot vs Dicot7:39
  • Formation of Seed and Fruit10:58
  • Some Important Terms12:10
  • Artificial Hybridisation11:56

Requirements

  • Basic understanding of Biology

Description

Description

The myriads of flowers that we enjoy gazing at, the scents and the perfumes that we swoon over, the rich colours that

attract us, are all there as an aid to sexual reproduction.

Flowers do not exist only for us to be used for our own selfishness. All flowering plants show sexual reproduction.

A look at the diversity of structures of the inflorescences, flowers and floral parts, shows an amazing range of

adaptations to ensure formation of the end products of sexual reproduction, the fruits and seeds. In this chapter, let us understand the morphology, structure and the processes of sexual reproduction in flowering plants (angiosperms).


Flowers are the seat of sexual reproduction in angiosperms. In the flower, androecium consisting of stamens represents the male reproductive

organs and gynoecium consisting of pistils represents the female reproductive organs.

A typical anther is bilobed, dithecous and tetrasporangiate. Pollen grains develop inside the microsporangia. Four wall layers, the epidermis, endothecium, middle layers and the tapetum surround the microsporangium. Cells of the sporogenous tissue lying in the centre of the microsporangium, undergo meiosis (microsporogenesis) to form tetrads of microspores. Individual microspores mature into pollen grains.


Course Content

  1. Introduction

  2. Structure of Flower

  3. Male Sex Organ in Flower

  4. Microsprogenesis

  5. Pollen Grains

  6. Female sex organ - Pistil

  7. Pollination

  8. Sexual reproduction in flowering plants

  9. Agents of pollination

  10. Megasporogenesis

  11. Embryo sac formation

  12. Double Fertilisation

  13. Before and After Fertilisation

  14. Embryogeny

  15. Formation of Seed and Fruit

  16. Some important terms

  17. Pollen-Pistil Interaction

  18. Endosperm Formation

  19. More About Pollen Grains

  20. Outbreeding Devices

  21. Artificial Hybridisation

  22. Embryogeny - Monocot vs Dicot


These are fantastic concepts that will lay a strong theoretical foundation for you and help you with competitive exams like NEET , CET, Foundation

Who this course is for:

  • Biology enthusiast.
  • Beginners in Biology.
  • NEET & MHT-CET aspirants
  • Those preparing for board and competitive exams State Board, CBSE, ICSE , IGCSE, MHT-CET & NEET

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