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So what is pollination/fertilization/germination ??????

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Presentation on theme: "So what is pollination/fertilization/germination ??????"— Presentation transcript:

1 So what is pollination/fertilization/germination ??????

2 Pollination: Transfer of pollen from anther to the stigma

3 How many methods of pollination do you know?

4 Ways in which pollination occurs- Rain

5 Wind

6 Insects

7 Manually

8 Gravity

9 Fertilization: Joining of two gametes (male + female cells) to form a new organism.

10 Germination: When a seed changes from a dormant to an active condition.

11 What is required for germination?

12 Varies depending upon plant

13 General Requirements Adequate moisture Favorable Temperatures Presence of oxygen

14 Vernalization Some seeds require cold to open the seed coat.

15 Scarification Some seeds require abrasion to open the seed coat. Freezing and thawing. Pass through digestive tract of animal. Manually

16 Your task is to make a flower model to illustrate pollination using the guide posted on my website.

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18 Terms to know: Cotyledon First seed leaves Radicle First root Endosperm Initial nutrient source for seedling Seed Coat Provides Protection Germ Embryonic plant

19 What is the difference between monocot and dicot plants? Monocot Seed can not be split in two. Single cotyledon Parallel veins Fibrous roots Grass type plants Flower petals multiples of 3 Dicot Seed can be split in halves Two cotyledons Net like veins in leaf Tap root Broadleaf type plants Petals multiples of 4 or 5

20 Take 5 monocot and 5 dicot seeds. “Plant” them in brown paper towel and watch the parts emerge over the next several days. Record your observations. Communicate with your instructor to identify the parts.

21 Monocot Germination Parts 21 Radicle Coleoptile (Seeks out light) Single Cotyledon

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23 http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/G/Germination.html http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/W/Welcome.html http://www.google.com/imgres?imgurl=http://biology.unm.edu/ccouncil/Biology_ 203/Images/FloweringPlants/Angiolifecycle.jpeg&imgrefurl=http://biology.unm.ed u/ccouncil/Biology_203/Summaries/FloweringPlants.htm&usg=__PXTrO2tRovAM OCQfFY4EC1pzQqw=&h=396&w=350&sz=39&hl=en&start=25&zoom=1&um=1&it bs=1&tbnid=zkioQLe1xFcU6M:&tbnh=124&tbnw=110&prev=/images%3Fq%3Dfert ilization%2Bplants%2Bgamete%26start%3D20%26um%3D1%26hl%3Den%26safe% 3Dstrict%26sa%3DN%26rls%3Dcom.microsoft:en- us%26ndsp%3D20%26tbs%3Disch:1&ei=gvxOTbH7G8P38Abeq6C3Dgei=gvxOTbH7G8P38Abeq6C3Dg Good videos???? G:\horticulture\videos\VLC_file.htm http://www.google.com/imgres?imgurl=http://video.ecb.org/badger/download/vl c/images/VLC068_Flower_seeds.jpg&imgrefurl=http://explore.ecb.org/videos/VLC _media%3FP1%3DVLC068%26REFERER%3DOTHER&usg=__MD5ugv20biNDdJO031 ONqIYArRA=&h=480&w=640&sz=64&hl=en&start=13&zoom=1&itbs=1&tbnid=nx mgmuSBn1NFUM:&tbnh=103&tbnw=137&prev=/images%3Fq%3Dfertilization%2B sex%2Bcells%2B.org%26hl%3Den%26safe%3Dstrict%26rls%3Dcom.microsoft:en- us%26tbs%3Disch:1&ei=sBBPTYzNF4P78AbFxsClDg


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