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Geitonogamy can be… (Class 12 Biology SQP 2026-27, Q17A)

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BiologyCBSE Class 12 · Sample paper, session 2026-27 · 2 marks · Very short answer

CBSE Class 12 Biology sample paper 2026-27: question 17(A)

From the official CBSE sample question paper for 2026-27, section B, question 17(A), for 2 marks. Try it first; the hints and our step-by-step solution are below.

Q17(A) · 2 marks · Very short answerSexual Reproduction in Flowering Plants

Geitonogamy can be compared with cross-pollination as well as self-pollination. Comment.

Source: official sample paper from cbseacademic.nic.in (PDF). See it in the full Sample paper 2026-27.

Hints

Open one hint at a time and try again before the next.

Hint 1

Think about how many flowers and how many plants are involved in geitonogamy.

Hint 2

Compare the process of pollen transfer with the genetic source of the pollen.

Step-by-step solution

Each step shows the marks it earns, as an examiner would award them. Checked by an independent re-solve from the question paper.

  1. Geitonogamy is the transfer of pollen grains from the anther of one flower to the stigma of another flower on the same plant.

    1 mark

  2. Like cross-pollination (functionally): the pollen moves between two different flowers, so it needs a pollinating agent (wind, insects and so on). Like self-pollination/autogamy (genetically): the pollen comes from the same plant, so the gametes are genetically identical and no new genetic variation results.

    1 mark

Answer: Geitonogamy is functionally cross-pollination (it needs a pollinating agent between two flowers) but genetically similar to autogamy (the pollen comes from the same plant).

Where the marks are

  • Defines geitonogamy as pollen transfer between different flowers of the same plant (1 mark)
  • States it is functionally like cross-pollination (needs an agent) but genetically like autogamy (same plant) (1 mark)

Revise the chapter

Practise this chapterBoard-style questions from Sexual Reproduction in Flowering Plants, one at a time, marked against the answer key and marking points.Back to the full paperSample paper 2026-27: every question, by section.

The question is transcribed from the official paper; figures are described in words. The solution, hints and chapter tag are ours. Spotted an error? Write tosupport@questionbuddy.in.