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Sexual Reproduction in Flowering Plants - 1: NCERT Marking for NEET 2026 | Biology By Dr. Vani Sood

Автор: Dr. Vani's NEET Excellence

Загружено: 2025-08-12

Просмотров: 1721

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📚 NEET 2026 Biology | Class 12 Chapter 2: Sexual Reproduction in Flowering Plants | NCERT X-Ray with Dr. Vani

Dr. Vani kickstarts NEET 2026 Biology prep with Sexual Reproduction in Flowering Plants from Class 12 NCERT, breaking every concept into easy, exam-oriented points.

🌸 Flower Basics – Understand the four whorls of a typical flower:

Calyx – outer green sepals

Corolla – colourful petals that attract pollinators

Androecium – male part with stamens (filament + anther)

Gynoecium – female part with carpels (ovary + style + stigma)
NEET Tip: The ovary develops into fruit after fertilisation.

🌿 Male Reproductive Structure – The Anther

A young anther has 4 microsporangia (pollen sacs).

Inside, diploid microspore mother cells (MMC) undergo meiosis → form haploid microspores.

Microspores are first in tetrad form, then separate into individual pollen grains.

🌾 Pollen Grain Structure

Exine – tough outer layer made of sporopollenin (highly resistant).

Intine – soft inner layer (cellulose + pectin).

Mature pollen has 2 cells:
✅ Vegetative cell – large, food-rich, irregular nucleus
✅ Generative cell – small, forms 2 male gametes later

NEET Fact: 60% of angiosperms release pollen at this 2-cell stage.

💡 Why this matters for NEET: Dr. Vani highlights exactly how NCERT lines convert into MCQs, ensuring 100% syllabus coverage and accuracy.

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NCERT Marking for NEET 2026
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Sexual Reproduction in Flowering Plants - 1: NCERT Marking for NEET 2026 | Biology By Dr. Vani Sood

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