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Understanding Sexual Reproduction in Plants

Explore the intricate process of plant reproduction through flowers. Learn the parts of a flower, pollination methods, and fertilization in this engaging natural science lesson for 2nd ESO students at Sagrat Cor de Palma. Discover if all plants reproduce in the same way and identify the reproductive organs in plants.

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Understanding Sexual Reproduction in Plants

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  1. SEXUAL REPRODUCTION IN PLANTS NATURAL SCIENCE 2nd ESO SagratCor de Palma

  2. PARTS OF A FLOWER

  3. EVERYTHING WE THINK WE KNOW ABOUT.. Do allplants reproduce in thesameway? Has a plantgotreproductiveorgans? How do plants reproduce?

  4. FLOWER Thefloweristhereproductiveorgan of themostevolvedplants.

  5. PARTS OF A FLOWER

  6. PARTS OF A FLOWER • STAMENS: are thetheflower’smalereproductiveorgans. They aremade up of: • Anther • Filament • PISTIL: isthefemalereproductiveorgan. It ismade up of: • Stigma • Style • Ovary • COROLLA: • Petals: attractpollinatinganimals. • CALYX: • Sepals: protecttheflowerbeforeit opens. • RECEPTACLE: isthepartthatotherparts are attached. • PEDICEL: supportstheplant and connectsit to thestem.

  7. Activity 1: I thinkitisthe ………. I thinkthisisthe ………… In pairsorgroups of three, readthedefinitionsand suitthemwiththenames of theparts of a plant. Use thefollowingpatterns.

  8. Activity 1:

  9. POLLINATION

  10. Pollination Itistheprocessbywhichpollengrains, found in theflower’sstamens, reachthepistil. PISTIL STAMEN

  11. ACTIVITY7 Write“insectpollination” or “windpollination”

  12. FERTILISATION

  13. FERTILISATION • Ifthe pollen graindepositedon thestigma is therightone for thespecies of flower, itproducesthepollen tube. • Themalegametesmovedownthroughthistube.

  14. FERTILISATION • Thistubegrowsdownthestyle to reachthe ovules in theovary. • There, itmeetstheoosphere ( femalegamete). • Thefusion of a malegametewiththefemalegamete to form a zygote is calledfertilisation.

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