SHANTANU RAJAT aman ADITYA

8/7/2019 SHANTANU RAJAT aman ADITYA

1/34

KendriyaKendriya VidyalayaVidyalaya

AjniAjni, Nagpur, Nagpur

ShantanuShantanu RajatRajat

AdityaAditya

AmanAman

Presented By:Presented By:


2/34

Long Test No. 1 (Feb. 4)Long Test No. 1 (Feb. 4)

Po

inters fo

r ReviewPo

inters fo

r Review Reproduction in PlantsReproduction in Plants

1. Sexual Reproduction1. Sexual Reproduction

-- Parts of a FlowerParts of a Flower-- PollinationPollination

-- FertilizationFertilization

-- Seed Dispersal & GerminationSeed Dispersal & Germination

2. Asexual Reproduction2. Asexual Reproduction

-- Natural Vegetative PropagationNatural Vegetative Propagation

-- Artificial Vegetative PropagationArtificial Vegetative Propagation


3/34

Quiz # 3 on ThursdayQuiz # 3 on Thursday

1.1. Seed germinationSeed germination

2.2. Needs of a growing seedNeeds of a growing seed

3.3. Asexual ReproductionAsexual Reproduction-- Natural Vegetative PropagationNatural Vegetative Propagation

-- Artificial Vegetative PropagationArtificial Vegetative Propagation


4/34

AsexualAsexual

ReproductionReproduction(plants)(plants)


5/34

Plants are

important part ofthe environment

and our lives. In

fact, many of ourneeds are being

sustained by the

different plantsaround us.

Can you name

some important

things or needswe get from

plants?


6/34

Germination

Growing plant

Flowering plant

Pollination

Fertilization

Dispersal of seeds


7/34

Some plants don'tSome plants don'tproduce flowersproduce flowers

and seeds. Plantsand seeds. Plants

such assuch as fernsfernsand mossesand mosses areare

called noncalled non--

flowering plantsflowering plantsand produceand produce

sporesspores instead ofinstead of

seeds.seeds.


8/34

SporesSpores areare

microscopic specksmicroscopic specks

of living material.of living material.

Ferns produce theirFerns produce their

spores on thespores on the

undersides of theundersides of theleaves (fronds).leaves (fronds).

They are the brownThey are the brown

"spots" or "pads" on"spots" or "pads" onthe bottom of thethe bottom of the

leaves.leaves.


9/34

Some plants usesSome plants usesplant parts inplant parts in

order toorder to

reproduce. Wereproduce. We

call itcall it asexualasexualreproduction orreproduction or

vegetativevegetative

propagationpropagation ofofplants.plants.


10/34

Reproduction in PlantsReproduction in Plants

Sexual Asexual

Pollination (self or cross)

REPRODUCTION

PLANT

Fertilization

Flowers (perfect or imperfect)

Fruits and Seeds

Seed dispersal/Germination

Seedling- young plant

VEGETATIVE

PROPAGATION

Natural Artificial


11/34

Natural Vegetative PropagationNatural Vegetative Propagation

Natural vegetative propagation is thegrowing of new plants from parts of a

parent plantsuch as underground stems, roots and

leaves.


12/34

New Plants From StemsNew Plants From Stems

Modified stems


13/34

BulbBulb

Examples: onion (sibuyas), lily, hyacinthExamples: onion (sibuyas), lily, hyacinthand tulipand tulip

AA bulbbulb is consist of a short stem base withis consist of a short stem base with

one or more buds enclosed in many fleshyone or more buds enclosed in many fleshyleaves, which store food.leaves, which store food.


14/34

CormCorm

Examples: Gabi, Gladiola and BegoniaExamples: Gabi, Gladiola and Begonia CormCorm is a thick stem base with scalyis a thick stem base with scaly

leaves at the nodes and contains storedleaves at the nodes and contains stored

food.food.


15/34

TuberTuber

Examples: Irish potatoExamples: Irish potato

TuberTuberis enlarged because of stored food.is enlarged because of stored food.

The eyes of the potato are its nodesThe eyes of the potato are its nodes

where buds and rootswhere buds and roots

will develop.will develop.


16/34

RhizomeRhizome

Example: Ginger (luya), birds of paradiseExample: Ginger (luya), birds of paradise

RhizomeRhizome is an underground stem thatis an underground stem that

grows horizontally near the soil surface.grows horizontally near the soil surface.

Roots and buds develop at the nodes andRoots and buds develop at the nodes and

grow into new plants.grow into new plants.


17/34

Runners and StolonsRunners and Stolons

Examples: Strawberry and BermudaExamples: Strawberry and Bermuda These stems grow horizontally above theThese stems grow horizontally above the

ground. When the node touchesground. When the node touches

the ground the roots and leavesthe ground the roots and leaves developdevelopand a new plant growsand a new plant grows


18/34

New Plants from RootsNew Plants from Roots

Plants like the turnip (or singkamas),Plants like the turnip (or singkamas),carrot, radish and sweet potato (kamote)carrot, radish and sweet potato (kamote)

have storage roots.have storage roots.

These roots contain food.These roots contain food.

When planted, storage roots grow intoWhen planted, storage roots grow into

new plants.new plants.


19/34

New Plants from the LeavesNew Plants from the Leaves

Katakataka has leaves that produce newKatakataka has leaves that produce newplants separate from the parent plant andplants separate from the parent plant and

continue to grow.continue to grow.

Begonia plants have also produce newBegonia plants have also produce newplants from their leaves that touch the soil.plants from their leaves that touch the soil.


20/34

Artificial Vegetative PropagationArtificial Vegetative Propagation

It is a method of propagatingIt is a method of propagating

plantsplants develop by peopledevelop by people who arewho are

engaged in the production ofengaged in the production ofplants for food or decoration.plants for food or decoration.


21/34

CuttingCutting

The cutting produces newThe cutting produces new rootsroots,, stemsstems, or, or

both, and thus becomes a new plantboth, and thus becomes a new plant

independent of the parent.independent of the parent.


22/34


23/34

LayeringLayering

LayeringLayering is a technique foris a technique forplantplant

propagationpropagation in which a portion of an aerialin which a portion of an aerialstemstem is encouraged to growis encouraged to grow rootsroots whilewhile

still attached to the parent plant and thenstill attached to the parent plant and then

removed and planted as an independentremoved and planted as an independent

plant.plant.


24/34


25/34

GraftingGrafting

A branch or stem iscut from one plantcarefully and joined toanother. The branchor stem shares thefood and water thatpasses through thestem of the mother

plant.

Grafting is done toimprove the quality ofsome plants.


26/34

Grafting is use to:

1.speed the maturity of some plants.

2.provide strong stalk for some ornamentalplats.

3.repair a damage trunk of a tree which stopsthe flow of nutrients.


27/34

BuddingBudding

It is done by choosingand cutting a bud fromone plant and attaching

it to another plant.The bud must fit well tothe mother plant.When the bud grows

big enough it willbecome part of theplant.


28/34

Steps 1

7654

2

1

3


29/34

MarcottingMarcotting

In marcotting, a healthy mature plant isIn marcotting, a healthy mature plant is

selected.selected.

The bark of the plants stem is removed.The bark of the plants stem is removed. Soil must be put around the open stemSoil must be put around the open stem

which is then wrapped with cloth, plastic orwhich is then wrapped with cloth, plastic or

coconut husk.coconut husk.

In few months time, roots will grow out ofIn few months time, roots will grow out of

the stem.the stem.


30/34


31/34

CloningCloning

Cloning is a method of producing a newCloning is a method of producing a new

plant using tissue of culture.plant using tissue of culture.

Beginning with a group of cells cut fromBeginning with a group of cells cut fromthe part of the mother plant, thousands ofthe part of the mother plant, thousands of

exact copies can be produced within aexact copies can be produced within a

short period.short period.


32/34

Natural Vegetative propagationNatural Vegetative propagation

- the growing of new plants from parts of a

parent plant such as underground stems,roots and leaves.

Plants can grow from stems, roots and leavesPlants can grow from stems, roots and leaves

(Modified stem)(Modified stem) A. bulbA. bulb

B. tuberB. tuber

C. cormC. corm

D. rhizomeD. rhizome

E. runners/ stolonsE. runners/ stolons


33/34

Artificial vegetative propagationArtificial vegetative propagation

A method of propagating plants developA method of propagating plants developby people who are engaged in theby people who are engaged in the

production of plants for food or decoration.production of plants for food or decoration.

CuttingCutting

GraftingGrafting

LayeringLayering

BuddingBudding

MarcottingMarcotting CloningCloning

These methods of propagation helpsThese methods of propagation helpsimprove the quality of plants.improve the quality of plants.


34/34

SHANTANU RAJAT aman ADITYA

Documents