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Sexual Reproduction in Flowering Plants: Pre-fertilisation
Biology · Chapter 1 · Unit 1: Reproduction
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Your path through this chapter
Visual lesson Beta
- Part 1: Microsporogenesis and megasporogenesis16 slides
- Part 2: Pollination, outbreeding devices and artificial hybridisation16 slides
Flashcards Beta
34 cards for quick recall of key terms and facts.
Review the cards Step 3: Not startedPractice
66 board-style questions with instant checks: Multiple choice 28, Short answer 21, Assertion and reason 5, Long answer 4.
Practise Step 4: Not startedChapter test Free
Short and long chapter tests in board pattern, with results and analysis.
Step 5: Not started- Chapter test (long) — Sexual Reproduction in Flowering Plants: Pre-fertilisation · 40 marks · 100 min
- Chapter test (short) — Sexual Reproduction in Flowering Plants: Pre-fertilisation · 20 marks · 50 min
Topics 5
- Flower structure; microsporangium and T.S. of anther; microsporogenesis; structure and development of the pollen grain; pollen viability and economic importance
- Pistil; megasporangium (L.S. of anatropous ovule); megasporogenesis; development and structure of the female gametophyte
- Pollination types (autogamy, chasmogamy, cleistogamy, geitonogamy, xenogamy); agencies and floral adaptations for wind, water and insect pollination; advantages of self- and cross-pollination
- Outbreeding devices (contrivances against self-pollination); pollen-pistil interaction, compatibility and incompatibility
- Artificial hybridisation: emasculation and bagging; significance in plant breeding