Reproduction Class 10 Notes Science Chapter 8

CBSE Class 10 Reproduction Science Chapter 8 Notes  

CBSE NCERT Class 10 Notes Science contains physics, chemistry and biology notes of chapter 8 Reproduction topics given in textbook are part of Revision Notes for Class 10

CBSE Class 10 Chapter-wise Science Notes

Science Notes cover an overview of the main given points of every concepts and Topics in the NCERT TextBooks Class 10th Science this Chapter Notes includes topic/concepts wise explanations for all the topic provided in the book such as Reproduction in Animals And plants, Budding yeast , Vegetative Propagation , Human Reproduction

Well prepared Class 10th Science Notes will guidance students understand the topics ,concepts and themes covered in all the chapters of Ncert Text book of 10th 

Reproduction

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The production of new organism form the already existing organism of the same species is known as Reproduction.

Significance of Reproduction

- The process of reproduction ensures continuity of life on earth. - Reproduction is essential for the survival of a species on this earth.

Types of Reproduction:-

1. Asexual Reproduction-

- The production of a new organism from a single parent without the involvement of sex cells (or gametes) is called asexual reproduction.

2) Sexual Reproduction-

-The production of a new organism from two parents by making use of their Sex cells (or gametes) is called Sexual Reproduction.

Ques - Differentiate between Asexual Reproduction and Sexual

Reproduction and it's Types 

Asexual Reproduction

1) Only one parent is needed to produce a new organism.

Sexual Reproduction

1) Two parents are needed to produce a new organism.

2) Sex cells (or gametes) take part in sexual reproduction.

2) No Sex cells (or gametes) are involved.

3) No fusion of gametes takes place. Thus, zygote is not formed.

3) Fusion of gametes results in the formation of zygote

Asexual Reproduction

Fission

In this process of fission, a unicellular organism splits or divides into two or more new organism.

Binary Fission new organism

1) The parent organism splits to form twa

Example 1) - Binary fission in Amoeba (fission con take place in any place)

Multiple Fission

1) The parent organism splits to form many new organism at the same time

Example-Plasmodium 

Multiple fission in Heal Image of Binary Fission in Amoeba

Fragmentation

The breaking up of the body of a simple organism into two or more pieces on maturing, each of which subsequently grows to form a complete new organism, is called fragmentation

-Example - Spirogyra

 Fragmentation in Spirogyra

Real photo of Fragmentation in Spirogyra

Ques- Ans-

What is the difference between Fission and Fragmentation?

 Fission Unicellular

Fragmentation

Multicellular

Regeneration

The process of getting back a full organism from its body parts is called Regeneration

Example - Hydra and Planaria

GOD

Red photo

Budding

-In budding, a small part of the body of the parent organism grows out as a "bud' which then detaches and becomes a new organism.

- Example Hydra

Boding in

Spore Formation char

Real photo of budding in Hydra

The parent plant produces hundred of microscopic reproductive units called 'spores. When the spore case of the plant bursts, then the spores spread into air: When these air-borne spores land on food (or soil) under favourable conditions (like damp and warm conditions), they germinate and produce new plants

-Example - Rhizopus

Spores

Figure 8.6 Spore formation in Rhizopus

Real photo of Spore Formation in Rhizopus

Rage of Bryophyllum 

Vegetative Propagation:

-In Vegetative propagation, new plants are obtained from the parts of old plants (like Stem, roots and leaves) without the help of any Reproductive organs.

Natural Vegetative Propagation 1) Buds produced in the  nood of the leaf margin of Bryophyllum fall on the sad end develop into new Artificial Vegetative Propagation

1) The process of growing many plants from one plant by man-made methods

Example-Sugarcane Rose, Jasmine

2) Its three common methods are

(1) Cutting: It involves cutting a piece of the plant and rooting it to produce a new plant

(i) Layering

It involves covering the branch of a plant with sail and then cutting it.

(ii) Grafting

It occurs when two different

plant stem are joined and they

grow as a single plant 

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