Pollination and fertilization
Presentation
•
Biology, Science
•
7th - 8th Grade
•
Medium
Dennis Yanga
Used 68+ times
FREE Resource
18 Slides • 8 Questions
1
Pollination and fertilization
2
Colorized scanning electron microscope image of pollen grains from different plants. https://en.wikipedia.org/wiki/Pollen
3
Transferring pollen
Pollen contains the male gametes
Pollen must be carried from the anther to the stigma
4
5
6
Costa's hummingbird (Calypte costae) collecting nectar from the flowers of ocotillo (Fouquieria splendens).
7
Windblown pollen from a lodgepole pine. https://www.britannica.com/science/pollen
8
9
Multiple Select
10
Fill in the Blanks
11
Multiple Choice
The diagram shows a process in plant reproduction.
Which process is represented by arrow X?
12
Tubes growing from pollens viewed under a microscope. https://www.saps.org.uk
13
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.
14
15
16
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
17
Pollen-tube growth and development of an embryo sac. https://www.researchgate.net
18
https://mammothmemory.net/biology/plants/sexual-reproduction-in-plants/ovary-fruit.html
19
https://sielearning.tafensw.edu.au/MPR/RTC2016A/html/pages/website/f_guide/fg_02.htm
20
Multiple Choice
21
Multiple Choice
22
Fill in the Blanks
23
Multiple Choice
24
25
This photo deserves a second look. -Mr.Dennis
26
Poll
Pollination and fertilization
Show answer
Auto Play
Slide 1 / 26
SLIDE
