Factors affecting pollination: 1. Nectar2. colorful flowers and fragrancesex. Carrion plant produces a flowerthat smells like raw meat and is redlike raw meat. It attracts flies to helpwith pollination.
Factors affecting pollination: 1. Nectar 2.Colorful flowers and fragrances 3.Creator DesignOr How a flower and insect aredesigned by the Creator. Ex. Yucca flower is only pollinated by the Yucca moth that can reach the pollen.
Horticulturalist•specialize in growing plants•artificially cross pollinate differentspecies to produce HYBRIDS.•Hybrids – a combinationex. Seedless watermelons
Fertilization – the joining of thesperm cell (male gamete) withthe egg cell (female gamete). Gamete = reproductive cell
Pollen has traveled and landed on stigma. (pollination)Steps of fertilization:1. Pollen tube is formed and growsdown to the ovule.2. Sperm cell divides forming twosperm cells.
Sexual Reproduction: requires theunion of the male and femalegametes resulting in the exchangeof genetic information.
Asexual reproduction:•Formation of new individualsfrom a single parent cell•No genetic information isexchanged•No fertilization
Formation of Ripening FruitWhen ovule is fertilized aseed is produced.Seed triggers the release ofhormone in the plant thattells the fruit to ripen.
Formation of Ripening FruitSome plants have fruitswithout seeds such as thebanana.Banana treereproduces asexually from rhizome (under ground stem)
Formation of Ripening FruitFruits are prepared forpicking by the formation ofthe abscission layer wherethe fruit attaches to thebranch.
Pollen and PeoplePollen breathed intorespiratory system by people can cause an allergic reactioncalled HAYFEVER.
Pollen and PeoplePollen triggers the body to releasea chemical messenger calledhistamine which causes anallergic reaction in the body.People taken an antihistamine toblock the production of thehistamine.
Pollen and PeopleThe pollen index isbased on amount ofragweedpollen in theair.