Skip to main content
Super TutorResources
Chapter 1 of 15
Syllabus

Sexual Reproduction in Flowering Plants — Syllabus

ICSE · Class 12 · Biology

What Sexual Reproduction in Flowering Plants covers in ICSE Class 12 Biology: 4 topics, for the 2026-27 session.

104 questions52 flashcards2 formulas & key relations5 concepts

Interactive on Super Tutor

Studying Sexual Reproduction in Flowering Plants? Get the full interactive chapter.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for syllabus and more.

Try Super Tutor — Free

Free trial, no card needed.

A comparative diagram illustrating isogamy, anisogamy, and oogamy, showing the morphological characteristics of gametes and their fusion.
Super Tutor

One of 20 illustrations for Sexual Reproduction in Flowering Plants in Super Tutor — alongside flashcards, concept maps and practice questions.

4 Topics · ICSE Class 12 Biology · 2026-27

Topics in Sexual Reproduction in Flowering Plants

1

1. Flower Structure and the Life Cycle of Angiosperms

  • A flower is a compressed shoot with sepals, petals, stamens and carpels arranged on the thalamus.
  • The outer two whorls are accessory whorls: calyx and corolla.
  • The inner two whorls are essential whorls: androecium and gynoecium.
2

2. Microsporogenesis and Pollen Grain Structure

  • Microsporogenesis is the formation of microspores from microspore mother cells by meiosis.
  • Each microspore mother cell divides meiotically to form four haploid microspores.
  • The callose layer binding the tetrad is dissolved by callase secreted by the tapetum.
3

3. Development of Male Gametophyte

  • The pollen grain is the male gametophyte and develops in two stages: pre-pollination and post-pollination.
  • In pre-pollination development, the nucleus divides mitotically to form a larger vegetative cell and a smaller generative cell.
  • The vegetative cell has abundant food reserve and a large nucleus called vegetative nucleus or tube nucleus.
4

4. Ovule Structure and Female Gametophyte

  • The ovule is the megasporangium borne on the placenta.
  • The ovule contains nucellus, integument or integuments, micropyle, funicle, hilum and chalaza.
  • The nucellus is a massive parenchymatous body and the site of megasporogenesis.

Key Concepts

Central concept: Sexual reproduction in angiosperms through flower structure, gametophyte development, pollination, fertilization, and seed and fruit formation

Flower as reproductive organLife cycle of angiospermsMale reproductive structuresMicrosporangium and anther wallMicrosporogenesis and pollen grainMale gametophyte developmentFemale reproductive structuresTypes of ovules

Work through every topic in Sexual Reproduction in Flowering Plants with notes and quizzes

Start This Chapter

Frequently Asked Questions

What are the important topics in Sexual Reproduction in Flowering Plants for ICSE Class 12 Biology?
Key topics in Sexual Reproduction in Flowering Plants include Flower Structure and the Life Cycle of Angiosperms, Microsporogenesis and Pollen Grain Structure, Development of Male Gametophyte, Ovule Structure and Female Gametophyte. Study these first, then practise questions on each for the ICSE Class 12 board exam.
How should I revise Sexual Reproduction in Flowering Plants for the ICSE Class 12 board exam?
Learn the core ideas first, then work through the 104 practice questions on Sexual Reproduction in Flowering Plants. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Sexual Reproduction in Flowering Plants

All ICSE Class 12 Biology Syllabus

For serious students

Get the full Sexual Reproduction in Flowering Plants chapter — start free.

Quizzes, flashcards, an AI doubt solver and a study plan for ICSE Class 12 Biology. Free to start, no card needed.

Try Super Tutor Free
Try this chapter free