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SEXUAL REPRODUCTION IN PLANTS

SEXUAL REPRODUCTION IN PLANTS. NATURAL SCIENCE 2nd ESO Sagrat Cor de Palma. PARTS OF A FLOWER. EVERYTHING WE THINK WE KNOW ABOUT. Do all plants reproduce in the same way ? Has a plant got reproductive organs ? How do plants reproduce?. FLOWER.

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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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