Post on 24-Feb-2016
description
Notes on Reproduction
By: Dhikshitha 7E
Plants can Reproduce in 2 ways. oSexual Reproduction.
oAsexual Reproduction.
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http://www.saburchill.com/ans02/images2/210807004.jpg
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/
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.
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
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
Sexual Reproduction
http://www.mendelweb.org/MWflower.html
Plants can be Uni sexual or Bisexual
Female•Stigma•Style •Ovary•Ovules
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
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
Seed Dispersal
Seed Dispersal can happen in 4 different ways.Air Water Animals Exploding flowers
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
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
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
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
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
Seeds
• There are 2 different types of seeds
Dicot Seeds
Monocot Seeds
http://www2.yk.psu.edu/~sg3/ist311/games/team3/images/seeds.png
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
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
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
THANK YOU FOR WATCHING!