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Published byShawn Boyd Modified over 9 years ago
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PLANT REPRODUCTION
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Plants Reproductive Structures Cones: Gymnosperms –Female cones contain the ovules which contains the egg cell –Male cones contain pollen which are like sperm cells Flowers: Angiosperms –Pistil: female part of flower –Stamen: Male part of flower
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Pollination Insects visit flowers to search for nectar – their food. But the flowers use the insects for their own purposes!
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As the insect probes for nectar, its body rubs against the stamens. Pollen gets stuck on the insect’s legs. You can often see bees with a heavy load of yellow pollen on their hind legs.
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Pollination When the insect visits another flower of the same type, the pollen will stick to the pistal. This is called pollination.
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Fertilization The pollen travels to the ovary, where it joins with an ovule. This is called fertilization.
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Seeds Seeds: the fertilized egg Seed Structure: –Seed coat: protects plant –Young plant –stored food
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Types of Seeds
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Seeds The seeds develop inside the ovary, which grows to become the seed pod or fruit.
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Seed Dispersal The seeds are dispersed by: –Animals –Wind –Explosion –Water
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Germination If the seed lands in a suitable place, it will germinate, and grow into a new plant. Then the cycle starts all over again.
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Write these words in the boxes: germination, fertilization, pollination, seed dispersal, parent plant, plant growth 1 2 4 5 3 6
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Write the correct words in the boxes: stamen, stigma, petals, ovary, ovules, pollen, sepals, anther. The male part of the flower This is where pollen is made Insects carry this from flower to flower 8 7 3 These attract insects 1 This is the female part of the flower, which receives the pollen 2 These become seeds after fertilization 5 This is where the seeds will grow 4 These protect the flower before it opens 6
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