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Plant Reproduction

Plant Reproduction. 3.2 pages 66-69. Plant Parts: Male. Pollen: Anther: Filament:. Carries the plant sperm. Where the pollen is made. The stem of the anther. Plant Parts: Female. Pistil. Stigma: Style: Ovary: Ovules. Sticky part where pollen lands.

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Plant Reproduction

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  1. Plant Reproduction 3.2 pages 66-69

  2. Plant Parts: Male • Pollen: • Anther: • Filament: Carries the plant sperm Where the pollen is made The stem of the anther

  3. Plant Parts: Female Pistil • Stigma: • Style: • Ovary: • Ovules Sticky part where pollen lands. Tube that supports the stigma and carries sperm to the ovary. Contains the ovules. Each contains an egg.

  4. Flowering Plants • Largest most _____ group of plants. • Flowering plants are called _________. • Plants that do not flower such as pine trees are called __________. • Flowering plants reproduce through _________ reproduction. diverse angiosperms gymnosperms sexual

  5. Sexual Reproduction • Sexual reproduction requires a ______ and an _____. • In flowering plants these can be located: sperm egg On the same flower On the same plant but not on the same flower On different plants

  6. The magic begins….. • Pollination: Occurs when the pollen comes in contact with the stigma.

  7. The magic continues: • Fertilization: Occurs when the sperm joins with the egg. The pollen grain grows a long tube that carries the sperm down the style to the egg waiting in the ovary.

  8. Making a Seed… • Each _______ becomes a seed. • The flower petals _______________. • The _______ becomes the fruit. • The fruit ripens and the seeds are ____________. • Disperse: ovule die and fall away ovary dispersed To drive or send off in various directions; to scatter

  9. Types of Dispersal • Eaten: • Hitchhike: • Wind: Animals and birds can eat the fruit and then “deposit” the seeds in a nice pile of fertilizer. Some fruits are covered in barbs that attach to fur and clothing and the seed is carried away. Wind can carry a seed away from the parent plant.

  10. From Seed to Plant • Once the seed is mature it may become _________. • How long can dormancy last? • Breaking dormancy: dormant The oldest seed known to have germinated was 3,000 years old. Ideal conditions (water, sunlight, nutrients) Extreme conditions (freezing or fire)

  11. Germination • Under the right conditions a seed will germinate. • Germinate: To begin to grow or develop. To sprout.

  12. Asexual Reproduction • Conditions aren’t always right for sexual reproduction so some flowering plants can reproduce asexually as well. • Plantlets: • Tubers: • Runners Tiny plants that develop and fall off. Underground stems that produce new plants. Above ground stems that produce new plants.

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