2022 Plant Reproduction

7/31/2019 2022 Plant Reproduction

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Plant Reproduction

Mr. Christensen

University of Winnipeg

http://www.io.uwinnipeg.ca/~simmons/flower.htm

Pearson Collegehttp://www.pearson-college.uwc.ca/pearson/biology/asex/asex.htm

Topic # 2022


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Asexual Reproduction

Asexual reproduction is the formation of

new individuals from the cell(s) of a single

parent.

It is common in plants, less so in animals.


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Plant Asexual Reproduction Above ground Stems arch over and take

root at the tips, forming new plants

(Forsythia, Raspberry and Strawberry)

Horizontal above ground stems are called

stolons

Pearson Colle e htt ://www. earson-colle e.uwc.ca/ earson/biolo /asex/asex.htm


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Plant Asexual Reproduction

Underground stems that serve for food

storage and reproduction. Rhizomes, bulbs,

corms and tubers

Quackgrass Rhizomes

Irises and day lilies

Jeruasalem Artichoke, potato (tuber)

Pearson Colle e htt ://www. earson-colle e.uwc.ca/ earson/biolo /asex/asex.htm


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Pearson College http://www.pearson-college.uwc.ca/pearson/biology/asex/asex.htm

Amaryllis Bulb

Gladiolus Corm


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LeavesMitosis along the meristems at the

leaf margins produce tiny plantlets that fall

off and can take up an independentexistence.



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RootsPlants can send up stems from their

roots to reproduce. Dandelion, Poplar,

Aspen

California Pictures www.californiapictures.com/gallery.html


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Plant PropagationDeliberate

propagation by asexual means to

keep particularly desirable traits.Grafting removal of a twig

(scion) from a desired plant and

inserting it into a notch of a cut

stump (stock plant).

University of Arizona http://ag.arizona.edu/pubs/garden/mg/propagation/grafting.html


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CuttingsUsing stems, leaves or roots of

plants for asexual reproduction.



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Plant Sexual Reproduction

Sexual ReproductionSperm carried in

the pollen from the male part of a flower

fuses with the egg in the female part of theflower.

http://www.howe.k12.ok.us/~jimaskew/bflower.htm


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Plant Sexual Reproduction PollinationTransfer of pollen from the

male to the female part of the plant.

Self-PollinationPollen of a plant

pollinates a flower of the same plant (only

some plants can do this, apple trees for

example cannot)

University of the Western Capehttp://www.botany.uwc.ac.za/ecotree/flowers/pollination4.htm


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University of Illinois Urbana Champaign

http://www.life.uiuc.edu/plantbio/260/breedingsystems/breedingsystems.htm


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Cross PollinationPollen of a plant

pollinates another plant.

HybridThe offspring of genetically

different plants.

University of the Western Cape

http://www.botany.uwc.ac.za/ecotree/flowers/pollination4.htm


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Pollination Vectors

Wind (grasses)

Water (aquatic plants)

Insects (bees, beetles, butterflies and wasps)

Mammals (bats/rodents)

Birds

University of the Western Capehttp://www.botany.uwc.ac.za/ecotree/flowers/pollination4.htm


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Complete FlowerA flower having all

floral structures, including the calyx (sepals,

corolla (petals), stamen (anthers andfilaments) and pistil (stigma, style and

ovary). (Rose)

Texas Technolo ical Universit htt ://www. ssc.ttu.edu/ ss1321/Web%20to ics/c a2.htm


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Incomplete FlowerA flower which lacksone or more floral structures

Perfect FlowerA flower which has male

and female floral structures in the same

flower. (Rose, Apple, Tomato and Wheat)

exas Technological University http://www.pssc.ttu.edu/pss1321/Web%20topics/cpa2.htm


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Imperfect FlowerA flower which has male andfemale floral structures in separate flowers.(Spruce, Ash and Maples

Monoecious PlantA plant species havingseparate male and female flowers on the sameplant.(example corn, cucumber, Birch)

Dioecious PlantA plant species having maleand female flowers that are on separate plants.(example buffalograss, Hollies, Yews, Ash,Asparagus and Maple.)


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http://www.pumpkinnook.com/how to/pollen.htm

Male and Female flowers on a Pumpkin plant
http://www.pumpkinnook.com/howhttp://www.pumpkinnook.com/how


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Plant use of the Suns Energy

1% Photosynthesis

2% Heat the mass of the plant

6% Heat the air

10% Reflected

43% Converted to heat and radiated

48% Used to evaporate water


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Plant Growth Cycles


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Flower Structure


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Fruit Classifications


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2022 Plant Reproduction

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