notes on reproduction
DESCRIPTION
Notes on Reproduction. By: Dhikshitha 7E. Sexual Reproduction. . Asexual Reproduction. . Plants can Reproduce in 2 ways. . http://www.targetcbse.co.in/LMSM/file.php/1/polncycl.gif. http://www.saburchill.com/ans02/images2/210807004.jpg. Asexual Reproduction. - PowerPoint PPT PresentationTRANSCRIPT
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Notes on Reproduction
By: Dhikshitha 7E
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Plants can Reproduce in 2 ways. oSexual Reproduction.
oAsexual Reproduction.
http://www.targetcbse.co.in/LMSM/file.php/1/polncycl.gif
http://www.saburchill.com/ans02/images2/210807004.jpg
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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 than in animals.
http://www.education.com/science-fair/article/asexual-reproduction/
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Examples of Asexual Reproduction
Budding in Hydra.
Budding in yeast
spore formation in bread mould.
Binary Fission in Bacteria
Vegetative probation in potatoes in strawberries etc.
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Budding in Hydra.
http://www.labtechindia.net/product/Biology/bl-83.jpeg
Budding in hydra. As you can see in the image budding in hydra is when a small bud grows and starts to develop.
Here is a youtube video that explains more about budding in hydra.
http://www.youtube.com/watch?v=a5oHMjGqjyo
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Binary Fission in Bacteria
Binary Fission in Bacteria is when the parent enlarges (grows) and duplicates it’s DNA. In other words I splits into 2.
http://iws.collin.edu/biopage/faculty/mcculloch/1406/outlines/chapter%2011/11-2.JPG
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Sexual Reproduction
http://www.mendelweb.org/MWflower.html
Plants can be Uni sexual or Bisexual
Female•Stigma•Style •Ovary•Ovules
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Pollination Pollination is when pollen is
transferred form one plant to another and enables the fertilization and sexual reproduction.
It can happen in many ways:Bees: When bees take nectar from plants the pollen sticks on them. And when they sit on another flower the pollen wares off. Air: Pollen may move in the direction on the wind and fall on other flowers.
http://www.theairquality.com/wp-content/uploads/2010/05/bee-collecting-pollen.jpg http://www.treehugger.com/pollen-help
s-allergies-phot.jpg
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Fertilization • Fertilization is the fusion of pollen grain
nucleus and ovule nucleus.
http://www.school.net.th/library/create-web/10000/science/10000-6584/pic1.jpeg
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Seed Dispersal
Seed Dispersal can happen in 4 different ways.Air Water Animals Exploding flowers
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Seed dispersal through air.
• The lighter seeds can be carried to different places by air.
http://researchfacility.files.wordpress.com/2010/09/alsomitramacrocarpa.jpghttp://passionforeducating.com/yaho
o_site_admin/assets/images/Picture14.47125647_std.png
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Seed Dispersal Through Water• If the plant was next to a
body of water, there are chances that the seed would fall in the water. It will move to a far away place according to the movement of the water.
http://web1.stmaryssen-h.schools.nsw.edu.au/SMSHS/ricks%20sites/Biology%20web%20site/Pre_8_5_Evolution%20of%20Australian%20Biota/Seed%20dispersal/Seed%20Dispersal%20prac/bladed-seeds.jpg
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Seed Dispersal Through Animals
• When animals like squirrels find a fruit thy take it to different places and eat it. They do not eat the seed, so they spit it out.
http://4.bp.blogspot.com/_PuCt7OSC9iM/Sc6101DoLsI/AAAAAAAAAD8/hPn4YGntDb8/s400/squirrel.jpg
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Seed Dispersal Through Animals • Some seed have hook like
ends. When animals run past them they hook to their fur. As the animals run the seeds fall off.
http://media.spokesman.com/photos/2011/02/04/SRX_dogpark_5_t400.jpg?fd5af0684d698ce74dd4392bafb4f89a6dc66ee3
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Seeds Dispersal though exploding fruits
• Particular fruits explode when they get ripe. The shoot out their seeds and the seeds fall in different places.
http://biologylabs.utah.edu/bohs/IMAGES/Stephen%20Stern/S%20turneroides-ssm.jpg
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Seeds
• There are 2 different types of seeds
Dicot Seeds
Monocot Seeds
http://www2.yk.psu.edu/~sg3/ist311/games/team3/images/seeds.png
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Dicot Seeds
• Dicot Seeds are seeds that be spit in half. They are made of two pieces.
http://www2.estrellamountain.edu/faculty/farabee/biobk/dicotseed.gif
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Monocot Seeds
• Monocot seeds cannot be split into half. It is made of 1 piece.
http://3.bp.blogspot.com/_NfIGV0h1wfI/Rw7Fqnr4drI/AAAAAAAAABE/fZt-GwtNSZY/s400/cornkernel.gif
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Germination
http://scienceinhydroponics.com/wp-content/uploads/image-import/_uEJxElFqOmc/THML1zEnCLI/AAAAAAAAA5c/UFl3w09uwYI/s1600/germination.jpg
Germination in the name of the process in which a seed grows into a plant.
Conditions need for germination
AirSunlightSoil Water
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THANK YOU FOR WATCHING!