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Mostrando resultados de 247
  • Francès / Balade sur le bassin d'Arcachon

    Xtec Organización

    • 1233 visitas

    Le bassin d'Arcachon. L'ostréiculture. Vocabulaire Epurer : littéralement, rendre pur. Ici, simplifier. Un ostréiculteur : personne qui élève les huîtres. Caillé(e) : sans doute laiteuse.…

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  • Answer. Pollination, fertilisation and the formation of seeds | Recurso educativo 571437

    Answer. Pollination, fertilisation and the formation of seeds

    EduBook Organización

    • 3389 visitas

    Remember what you have studied in this section and answer the questions: In what two ways can pollen be transferred? What do we call the process where the spermatozoid and ovule meet? What does the…

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  • True/false. Mosses and ferns | Recurso educativo 566052

    True/false. Mosses and ferns

    EduBook Organización

    • 3268 visitas

    Are the following sentences true or false? The difference between mosses and ferns is that the former cannot do photosynthesis. Mosses and ferns are both non-vascular plants. Mosses and ferns are both…

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  • Pollination, fertilisation and the formation of seeds | Recurso educativo 571435

    Pollination, fertilisation and the formation of seeds

    EduBook Organización

    • 2260 visitas

    Pollination Sexual reproduction in plants occurs when a spermatozoid meets an ovule. For this to happen, the pollen grains need to travel from the stamens to the pistil. This process of transferring…

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  • Analyse. A text | Recurso educativo 483040

    Analyse. A text

    EduBook Organización

    • 2233 visitas

    Polyembryony Polyembryony is a type of sexual reproduction in which an embryo fragments into several identical embryos. They each develop independently. The young of each litter are of the same sex, as…

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  • Mushrooms | Recurso educativo 571259

    Mushrooms

    EduBook Organización

    • 1848 visitas

    The mycelium of some fungi produces special reproductive structures. These are called mushrooms. Mushrooms are made of very dense filaments that grow upwards. The top of the mushroom is called the cap.…

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  • Think and answer. Spermatozoids | Recurso educativo 571455

    Think and answer. Spermatozoids

    EduBook Organización

    • 1518 visitas

    Look at the diagram on the right. It shows the sexual reproduction of Sargasso seaweed, found in the Atlantic Ocean. Each spermatozoid has two small tails to help it swim to the ovules. What do the…

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