1 / 11

Pollination Methods

burke
Download Presentation

Pollination Methods

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

    1. Pollination Methods Susan Martin 7th grade Science

    2. Pollination Transfer of pollen grains (male-sperm) to the female part (stigma) of a seed plant by agents such as gravity, water, wind, and animals

    3. Some flowers are JUST male OR female The Alder is monoecious. Shown here: maturing male flower catkins on right, last year's female catkins on left (top right) male flower enlarged, showing stamens with pollen and reduced, sterile stigma; (below) shoot with flowers from female plant; (lower right) female flower enlarged, showing stigma and reduced, sterile stamens with no pollen

    5. Function of a Flower To attract pollinators by colorful petals, scent, nectar, markings and pollen

    6. Pollination Methods- 1. Wind/Gravity angiosperms& gymnosperms No bright colors, special odors, or nectar Most have no petals so Stamens and stigmas exposed to air Large amount of pollen lightweight, easily airborne Usually trees & grasses

    7. 2. water Pollen floats on the water’s surface drifting until it contacts flowers Very rare, waterweeds and pondweeds

    8. 3. Animals A. Insects Bee- usually yellows or blues, have nectar and/or pollen Butterfly: usually pinks or purples, scented, may have landing area, lots of nectar with little pollen, nectar guides & long tubes for butterfly tongues

    9. Animals cont. Insects continued Moths: usually white, blooms at night, strong sweet scents Beetles: may be spicy, fruity, or smell like decay Fly: Can have nectar or pollen, or smell like decay

    10. Animals cont. B. Birds- greatest nectar specialization, odorless, red or orange flowers, long tubes for hummingbirds C. Bats: large, white, strong odor, open at night, offer nectar

    11. Resources http://www.life.umd.edu/CBMG/faculty/Moctezuma/BSCI124/Lectures/PPT/Lec13_Pollination.ppt http://www.fs.fed.us/wildflowers/pollinators/bees.shtml http://www.pdphoto.org/PictureHome.php

More Related