EVA MARÍA MORENO BERDÓN 5ºA PARTS OF FLOWERS, FRUITS AND SEEDS. EVA MARÍA MORENO BERDÓN 5ºA

FLOWERS Are the sexual organs of flowering plants Most flowers have got four main parts

PETALS Have various functions and purposes depending on the type of plant. In general Petals protect some parts of the flower Attract/repel specific pollinators All petals together form the corolla Surround the reproductive parts of flowers

Petals are usually accompanied by another set of special leaves called sepals -Petals look like brigthly coloured leaves to attract pollinators

Petal Sepal Sepal Petal Petal Sepal The outer parts of the flower Protect the delicate inner parts of the flower There are usually as many sepals as petals They alternate with the petals Petal Sepal Sepal Petal Petal Sepal

sepal Consists of green leaf-like structures Grow at the base of the flower - All the sepals together form the calyx

pistil Is the plant’s female reproductive organ The pistil consists of ovule-bearing basic units called carpels A flower may have one or more pistils

Has three main parts: Stigma: area where the pollen is received Style: where the stigma is born Ovary: contains the embryo seeds or ovules

stamen Are the plant’s male reproductive organs Each stamen has got A tube called filament A sac called anther Each anther contain many grains of pollen The pollen is produced in chambers which contains the male gametes Then it is transferred to the pistil for fertilisation to take place.

Pistil and stamen

POLLINATION The transfer of pollen grains from the anther to the sitgma of a flower Flowering plants use the wind, insects, bats, birds and mammals to transfer pollen from the male (stamen) part of the flower to the female (stigma) part of the flower.

These animals are usually nectar-drinking animals like sunbirds Different agents Insects Pollen sticks to parts of insect’s bodies. Then is carried into other plants Other animals (birds) These animals are usually nectar-drinking animals like sunbirds Wind Pollen tend to be smaller and lighter in order to be carried by the wind

There are two types of pollination Self-pollination Transfer of pollen grains within one flower One flower Pollen grains from the anther are transferred into the stigma Cross-pollination Transfer of pollen grains from one flower to another Two similar flowers Pollen grains from the anther of one flower transferred into the stigma of the other flower

fertilisation Male and female sex cells must meet and fuse to form fruits and seeds When the male cells meet with the female cell, it is called fertilization. This is also called sexual reproduction because male and female sex cells are involved

germination The growth of the root through the seed coat

When a seed lands on a place with sufficient warmth, water and air, it starts to germinate

Steps of germination 1º The root of the baby plant grows out of the seed 2º The seed coat falls on the ground 3º The shoot appears and breaks through the soil and the first leaves show 4º The cotyldeons fall on the ground 5º The young plant now can make its own food with the sunlight by photosynthesis

VIDEO A plant story Parts of a flower

GAMES Life cycle of a plant Go flower grow How plants grow Kinder garden game

Questions and answers - How many parts have the flower? It has four main parts: petals, sepal, pistil and stamen All petals together form the…? They form the corolla - What protect sepals? They protect the inner parts of the flowers - Where sepals grow? They grow at the base of the flower

Questions and answers What are the three main parts of the pistil? Stigma, style and ovary What is pollination? Pollination is the transfer of pollen grains form the anther to the stigma of a flower Which are the agents of pollination? The different agents of pollination are insects, other animals like birds and wind

Questions and answers In which type of pollination the pollen grains are transfered from one flower to another? In cross pollination When the male sex cells join with the female sex cells within an ovule is called… Fertilisation Which are the parts of the stamen? Filament and anther

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