Skip to main content
Super TutorResources
Chapter 1 of 15
QuestionsNotesFlashcardsSummaryFormulasQuizConceptsSyllabusPlan
Syllabus

Sexual Reproduction in Flowering Plants

ICSE · Class 12 · Biology

Complete topic list for Sexual Reproduction in Flowering Plants in ICSE Class 12 Biology. Key concepts, sub-topics, and what to focus on for board exams.

104 questions52 flashcards5 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

1,000+ Class 12 students started this chapter today

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

This is just one of 20+ visuals inside Super Tutor's Sexual Reproduction in Flowering Plants chapter

Explore the full set
4 Topics · ICSE Class 12 Biology

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

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 Sexual Reproduction in Flowering Plants - Complete Lifecycle, Life Cycle of Angiosperms: Alternation of Generations, Overview of Sexual Reproduction in Flowering Plants. These are the concepts ICSE Class 12 examiners draw on most — study them first, then practise related questions.
How to score full marks in Sexual Reproduction in Flowering Plants — ICSE Class 12 Biology?
Understand the core concepts first, then work through the 104 practice questions available for this chapter. Revise formulas and 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 15 chapters — ICSE Class 12 Biology Syllabus

For serious students

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

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for ICSE Class 12 Biology.

Try Super Tutor Free
Try the full chapter — Free