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Important Questions

Sexual Reproduction in Flowering Plants

ICSE · Class 12 · Biology

Most important questions from Sexual Reproduction in Flowering Plants for ICSE Class 12 Biology board exam 2026. MCQs, short answer, and long answer questions with marks.

59 questions34 flashcards5 concepts

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A comparative diagram illustrating isogamy, anisogamy, and oogamy, showing the morphological characteristics of gametes and their fusion.
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59 Questions·
multiple choicetrue false

Sample Questions

1multiple choice

How many cells are present in a mature embryo sac?

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7 cells

A mature embryo sac (Polygonum type) has 7 cells but 8 nuclei. The central cell has 2 polar nuclei, contributing 2 nuclei to the total of 8.

2true false

Double fertilisation occurs in gymnosperms.

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False

Double fertilisation is unique to angiosperms (flowering plants). It does not occur in gymnosperms.

3multiple choice

Which structure develops from the ovule after fertilisation?

Show answer

Seed

After fertilisation, the ovule develops into the seed, and the ovary develops into the fruit (pericarp).

4multiple choice

Sporopollenin is deposited on which layer of the pollen grain wall?

Show answer

Exine

Sporopollenin is deposited on the exine (outer layer) of the pollen wall via ubisch granules secreted by the tapetum. The intine is made of cellulose and pectin.

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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 — Master Concept Map, Megasporogenesis to Female Gametophyte, Post-Fertilisation Events — Seed and Fruit Formation. 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 59 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
How many important questions are there in Sexual Reproduction in Flowering Plants?
There are 59 practice questions available for Sexual Reproduction in Flowering Plants. These cover multiple question types including MCQs, short answer, and long answer questions.

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

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