NCERT Class 12 Biology Sexual Reproduction in Flowering Plants Notes (Handwritten Notes & PDF Download)

Here we have shared NCERT Class 12 Biology Sexual Reproduction in Flowering Plants Handwritten Notes. The Sexual Reproduction in Flowering Plants notes is a best resources for students who are preparing for their board exam because it compile the entire lesson into short and includes every important topics.

With the help of Sexual Reproduction in Flowering Plants notes students can understand the chapter in a better way. Notes are prepared by very experience teachers in an organised way so students can rely on this notes for their exam preparation.

NCERT Class 12 Biology Sexual Reproduction in Flowering Plants Handwritten Notes

Next Chapter: Human Reproduction

Other Subjects:
Class 12 Physics Notes
Class 12 Chemistry Notes

Students can access this notes anytime on our website for free of cost. If you found notes helpful, you can also help your friends by sharing with them.

Key Points: Sexual Reproduction in Flowering Plants Notes PDF

Microsporogenesis

• The whole core of a microsporangium is filled with sporogenous tissue, also known as microsporocytes.
• Each sporogenous tissue’s cell is act as Pollen Mother cell.
• Pollen Mother cell undergoes Meiosis and produce 4 microspores which is microspore tetrad (haploid).

Pollen Allergy

• Allergy caused by pollen grain when inhaled.
• Pollen grains of many species cause severe allergies and bronchitis, asthma, e.g., Parthenium.

Pollen as Food Supplement

• Pollen grains are rich in nutrient.
• Taken in the form of tablet and syrup.
• It increases the efficiency of Athletes and horses.

Viability of Pollen

• It is the maximum time up to which pollen can germinate to form a pollen tube.
• Viability depends on prevailing temperature, species, and humidity.

Pollination

• Transfer of pollen grains from anther to stigma.

Types of Pollination (On the basis of source of pollen)

• Self-pollination
  • Autogamy
  • Geitonogamy
• Cross-pollination
  • Xenogamy

Artificial Hybridisation

• It is the process in which only desired pollen grains are used for pollination and fertilisation.
• Hybridisation proceeds in two steps:

1. Emasculation: in this , the Anther is removed from a bisexual flower before they release pollen grain. This process of removal of anther using forceps is emasculation.
2. Bagging: Flower is masked by a bag. In this stigma is covered before and after fertilisation. In unisexual flower, bagging is done before the flower opens.

Fertilisation

• Fusion of male and female gamete is known as fertilisation.
• One malegamete fuses with nucleus of eggcell. is termed as syngamy.

Advantages of Seed

• Seed protect the embryo from harsh condition.
• Provide nourishment to the developing embryo.
• Seed gives variation.
• Dormancy due to which seed can be stored.

Benefits of Sexual Reproduction in Flowering Plants Notes PDF

• Notes are created by topper’s students and expert teachers so you can rely on our notes for your board exam.
• Sexual Reproduction in Flowering Plants handwritten notes are organized in clear and structured way so you can revise whole chapter in very less time.
• By using our notes you can get rid off from making your own notes so you can focus on your study more.
• During exam time students feel very high pressure. Sexual Reproduction in Flowering Plants Notes are best for last-minute revision. It covered complex topics in very easy and understandable language very helpful for managing the stress in the last days of exam.
• All notes are totally free of cost and students can access notes anytime on our for totally free of cost.

Summary

FAQ