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

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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

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!