Reproduction chapter class 10 Vegetative propagation Natural and artificial

1. Vegetative Propagation
Natural and Artificial
By:- Shaurya Dhawan
Class:- 10
Teachers Name:- Mrs AlbinaWasim

2. Vegetative propagation is a method of asexual reproduction
in which new plants are obtained from new parts of plants,
without the help of any reproductive organs
The vegetative parts means leaf , steam and roots.
It occurs only in plants and thus calledVegetative reproduction
There are two types ofVegetative reproduction
1. NaturalVegetative Propagation
2. ArtificialVegetative Propagation

3.  This occurs when plants grow and develop
naturally without any human interference.
Natural vegetative propagation can be
enabled by the development of adventitious
roots.Thus, new plants may emerge from the
roots, stem and leaves of the parent plant.

4.  The stems of some plant grow parallel to the
ground.The new root and the shoot develops
at there nodes by the method of vegetative
propagation
 Ex:-
 Mint plant
 Potato
 Ginger etc

5.  Vegetative reproduction also take place through the
leaves of a plant .The leaves of some plant like Begonia
and Bryophyllum, produce adventitious buds in there
depression of there margins .These buds create new
plants when cut and planted in the soil in Bryophyllum if
a leaf falls on the ground the plant start growing

6.  Plants like sweet potato ,carrot and
asparagus develop into large number of
swollen fleshy roots . Each single root has
buds present on it which grow into leafy
shoots.

7.  Artificial vegetative propagation is a type of
plant reproduction that involves human
intervention.The most common types of
artificial vegetative reproductive techniques
include cutting, layering, grafting and
tissue culturing

8.  In this method stem into small pieces.The cut ends
are planted in the soil and soon new plants arise
from them.The cutting should hove a bud while
growing the plant throught cutting some examples
are- sugarcane, rose , lemon,etc.

9.  In this method the branches at the lower height with
axillary bud at the node are bend down to the ground to
touch the soil. now a ring of bark is removed carefully .put
soil to cover the bend stem and a heavy stone is kept over
it the stem touching the ground gives out roots and grow
into a new plant.

10.  Grafting is the act of placing a portion of one plant
(bud or scion) into or on a stem, root, or branch of
another (stock) in such a way that a union will be
formed and the partners will continue to grow.The
part of the combination that provides the root is
called the stock; the added piece is called the scion.

11.  tissue culture, a method of biological research in
which fragments of tissue from an animal or plant
are transferred to an artificial environment in which
they can continue to survive and function.The
cultured tissue may consist of a single cell, a
population of cells, or a whole or part of an organ.

12. ADVANTAGES
 They bear flowers and
fruits before than those
produced from seeds.
 It makes possible the
reproduction of plants such
as banana,orange,rose etc.
 All plants produced are
genetically same as their
parent plant.
 Superior variety in less
time is obtained
DISADVANTAGES
 It requires a good scientific
experties
 It can not be applied in all
type of plants or crops for
agricultural product.
 If some plants get infected
the whole crop gets
effected.