SHANTANU RAJAT aman ADITYA
-
Upload
saurabh-dasarwar -
Category
Documents
-
view
223 -
download
0
Transcript of 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:
-
8/7/2019 SHANTANU RAJAT aman ADITYA
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
-
8/7/2019 SHANTANU RAJAT aman ADITYA
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
-
8/7/2019 SHANTANU RAJAT aman ADITYA
4/34
AsexualAsexual
ReproductionReproduction(plants)(plants)
-
8/7/2019 SHANTANU RAJAT aman ADITYA
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?
-
8/7/2019 SHANTANU RAJAT aman ADITYA
6/34
Germination
Growing plant
Flowering plant
Pollination
Fertilization
Dispersal of seeds
-
8/7/2019 SHANTANU RAJAT aman ADITYA
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.
-
8/7/2019 SHANTANU RAJAT aman ADITYA
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.
-
8/7/2019 SHANTANU RAJAT aman ADITYA
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.
-
8/7/2019 SHANTANU RAJAT aman ADITYA
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
-
8/7/2019 SHANTANU RAJAT aman ADITYA
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.
-
8/7/2019 SHANTANU RAJAT aman ADITYA
12/34
New Plants From StemsNew Plants From Stems
Modified stems
-
8/7/2019 SHANTANU RAJAT aman ADITYA
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.
-
8/7/2019 SHANTANU RAJAT aman ADITYA
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.
-
8/7/2019 SHANTANU RAJAT aman ADITYA
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.
-
8/7/2019 SHANTANU RAJAT aman ADITYA
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.
-
8/7/2019 SHANTANU RAJAT aman ADITYA
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
-
8/7/2019 SHANTANU RAJAT aman ADITYA
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.
-
8/7/2019 SHANTANU RAJAT aman ADITYA
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.
-
8/7/2019 SHANTANU RAJAT aman ADITYA
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.
-
8/7/2019 SHANTANU RAJAT aman ADITYA
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.
-
8/7/2019 SHANTANU RAJAT aman ADITYA
22/34
-
8/7/2019 SHANTANU RAJAT aman ADITYA
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.
-
8/7/2019 SHANTANU RAJAT aman ADITYA
24/34
-
8/7/2019 SHANTANU RAJAT aman ADITYA
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.
-
8/7/2019 SHANTANU RAJAT aman ADITYA
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.
-
8/7/2019 SHANTANU RAJAT aman ADITYA
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.
-
8/7/2019 SHANTANU RAJAT aman ADITYA
28/34
Steps 1
7654
2
1
3
-
8/7/2019 SHANTANU RAJAT aman ADITYA
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.
-
8/7/2019 SHANTANU RAJAT aman ADITYA
30/34
-
8/7/2019 SHANTANU RAJAT aman ADITYA
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.
-
8/7/2019 SHANTANU RAJAT aman ADITYA
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
-
8/7/2019 SHANTANU RAJAT aman ADITYA
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.
-
8/7/2019 SHANTANU RAJAT aman ADITYA
34/34