Pollination and fertilization
Presentation
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Biology, Science
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7th - 8th Grade
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Medium
Dennis Yanga
Used 64+ times
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18 Slides • 8 Questions
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Pollination and fertilization
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Colorized scanning electron microscope image of pollen grains from different plants. https://en.wikipedia.org/wiki/Pollen
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Transferring pollen
Pollen contains the male gametes
Pollen must be carried from the anther to the stigma
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Costa's hummingbird (Calypte costae) collecting nectar from the flowers of ocotillo (Fouquieria splendens).
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Windblown pollen from a lodgepole pine. https://www.britannica.com/science/pollen
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Multiple Select
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Fill in the Blanks
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Multiple Choice
The diagram shows a process in plant reproduction.
Which process is represented by arrow X?
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Tubes growing from pollens viewed under a microscope. https://www.saps.org.uk
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Pollen tubes
Pollen grows a tube from the stigma down into the ovule. The male gamete goes down the tube and fuses with the female gamete inside an ovule.
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Seed formation
When the zygote starts to divide, it produces a little group of cells called an embryo
The ovule begins to change and gradually becomes a seed
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Pollen-tube growth and development of an embryo sac. https://www.researchgate.net
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https://mammothmemory.net/biology/plants/sexual-reproduction-in-plants/ovary-fruit.html
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https://sielearning.tafensw.edu.au/MPR/RTC2016A/html/pages/website/f_guide/fg_02.htm
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Multiple Choice
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Multiple Choice
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Fill in the Blanks
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Multiple Choice
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This photo deserves a second look. -Mr.Dennis
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Poll
Pollination and fertilization
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