Sexual Reproduction in Flowering Plants CBSE Class 12 PYQs

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Answer first

Sexual Reproduction in Flowering Plants PYQs (previous year questions) for CBSE Class 12: Sexual Reproduction in Flowering Plants (Biology) had 26 questions across the 50 official CBSE Class 12 papers we tagged (2016–2026), and appeared in 9 of them. Asked in 9 of 10 years. The concepts asked in the most papers: Pollination, Pollen Grain, Artificial Hybridisation.

Year-wise question count

Asked in 9 of 10 years.

Most-asked concepts

Sorted by the number of papers a concept appeared in.

How to practise Sexual Reproduction in Flowering Plants PYQs

1. Start with the concepts at the top of the table. They have come back the most.
2. Solve one year’s Sexual Reproduction in Flowering Plants questions from the official PDF against the clock, then check the answer listed below.
3. Log every miss as a concept gap, a calculation slip or a misread. Each needs a different fix.
4. Once a concept is clean in two papers, move to the next. Then sit a full paper from the year pages.

Questions by year

Each line gives the question number and paper, type, concept, our one-line summary, with a link to the official PDF.

CBSE Class 122026

• Q.1 (Biology (57/1/1)) · MCQ · Artificial Hybridisation: Plant that needs no emasculation for artificial hybridisation PDF
• Q.18 (Biology (57/1/1)) · Very short answer · Seed Development: Farmer's use of seed dormancy; pea seed vs castor seed PDF
• Q.22 (Biology (57/1/1)) · Short answer · Pollen Grain: Pollen viability across species and storage in pollen banks PDF
• Q.25 (Biology (57/1/1)) · Short answer · Megasporangium: Labelled diagram of an angiosperm megasporangium PDF

CBSE Class 122025

• Q.7 (Biology (57/1/1)) · MCQ · Embryo Development: Label parts in stages of dicot embryo development PDF
• Q.10 (Biology (57/1/1)) · MCQ · Microsporogenesis: Pollen grains and ovules from 50 microspore and megaspore mother cells PDF
• Q.32 (Biology (57/1/1)) · Long answer · Pollination: Cells of male gametophyte, modes of pollination, water pollination PDF

CBSE Class 122024

• Q.1 (Biology (57/1/1)) · MCQ · Pollination: Plant with monoecious flowers pollinated by geitonogamy or xenogamy PDF
• Q.17 (Biology (57/1/1)) · Very short answer · Seed and Fruit: Identify fruit and seed parts: pericarp, scutellum, embryonal axis, perisperm PDF
• Q.31 (Biology (57/1/1)) · Long answer · Male Gametophyte: Development of male gametophyte and diagram of three-celled pollen PDF

CBSE Class 122023

• Q.8 (Biology (57/1/1)) · MCQ · Microsporogenesis: Pollen grains formed from 325 microspore mother cells PDF
• Q.15 (Biology (57/1/1)) · Assertion-Reason · Seed Development: Endosperm use in ex-albuminous seeds and examples PDF
• Q.18 (Biology (57/1/1)) · Very short answer · Double Fertilisation: Entry of pollen tube into the embryo sac and fate of male nuclei PDF
• Q.33 (Biology (57/1/1)) · Long answer · Pollination: Modes of pollen transfer, water lily and Vallisneria, outbreeding devices PDF

CBSE Class 122020

• Q.2 (Biology (57/1/1)) · MCQ · Pollination: Condition that fully ensures self-pollination PDF
• Q.13 (Biology (57/1/1)) · Short answer · Microsporangium: Labelled diagram of transverse section of a mature anther PDF
• Q.14 (Biology (57/1/1)) · Short answer · Pollination: Distinguish wind-pollinated and insect-pollinated flowers PDF

CBSE Class 122019

• Q.6 (Biology (57/1/1)) · Short answer · Artificial Hybridisation: Which of papaya and potato needs emasculation; why both need bagging PDF
• Q.13 (Biology (57/1/1)) · Short answer · Pollen Grain: How pollen is stored in pollen banks and how they help farmers PDF

CBSE Class 122018

• Q.13 (Biology (57/1)) · Short answer · Parthenocarpy: Distinguish parthenocarpy and parthenogenesis with examples PDF
• Q.24 (Biology (57/1)) · Long answer · Double Fertilisation: Devices against autogamy and geitonogamy; events up to double fertilisation PDF

CBSE Class 122017

• Q.6 (Biology (57/1)) · Short answer · Pollen Grain: Why pollen is shed 2- or 3-celled; arrangement of cells at 2-celled stage PDF
• Q.11 (Biology (57/1)) · Short answer · Pollination: Pollination across distant cities; labelled pistil after pollination PDF
• Q.24 (Biology (57/1)) · Long answer · Polyembryony: Many embryos in an orange seed and whether they are genetically alike PDF

CBSE Class 122016

• Q.6 (Biology (57/1)) · Short answer · Outbreeding Devices: Why a lone pea plant sets seed but a lone papaya plant does not PDF
• Q.11 (Biology (57/1)) · Short answer · Pollen Grain: Material of pollen exine, its benefit, germ pores and use of pollen banks PDF

Other Biology chapters

• Reproduction in Organisms PYQs
• Human Reproduction PYQs
• Reproductive Health PYQs
• Principles of Inheritance and Variation PYQs
• Molecular Basis of Inheritance PYQs
• Evolution PYQs
• Human Health and Disease PYQs
• Strategies for Enhancement in Food Production PYQs
• Microbes in Human Welfare PYQs
• Biotechnology: Principles and Processes PYQs
• Biotechnology and its Applications PYQs
• Organisms and Populations PYQs
• Ecosystem PYQs
• Biodiversity and Conservation PYQs
• Environmental Issues PYQs

FAQ

How many Sexual Reproduction in Flowering Plants questions come in CBSE Class 12?

In the official papers we tagged: 4 in 2026, 3 in 2025, 3 in 2024, 4 in 2023, 3 in 2020, 2 in 2019, 2 in 2018, 3 in 2017 and 2 in 2016. Not asked in the other year. That is 26 questions in all, about 9% of Biology.

Which Sexual Reproduction in Flowering Plants topics repeat in CBSE Class 12?

Asked in the most papers: Pollination, Pollen Grain, Artificial Hybridisation. The concept table lists every one with its count.

Are these official CBSE Class 12 questions?

Yes. Every question is from an official CBSE Class 12 paper hosted on our year pages. The one-line summaries are ours; open the PDF linked beside each question for the full text.