Animal reproduction, Biology

Assignment Help:

Animal Reproduction -

Reproduction is the ability to produce new organism of its own type. It is meant to increase their number.

Reproduction includes -

(i) Replication of DNA                                          

(ii) Cell division

(iii) Formation of reproduction units                      

(iv) Division into offsprings.

Animals reproduce mainly in two ways -

S.NO.

ASEXUAL

SEXUAL

 

1.

 

2.

 

3.

 

4.

 

5.

 

6.

 

7.

 

8.

 

9.

 

10.

 

It is uniparental

 

Gametes are not formed

 

Reproductive organs are not needed

 

No fertilisation

 

Offsprings are similar to parent

 

New characters do not appear

 

No variation

 

No evolution

 

Definite process

 

Generation leads to extinction

 

uni / biparental

 

formed

 

needed.

 

fertilisation occur

 

different

 

appear

 

variation present

 

evolution takes place

 

Indefinite process

 

Not so


Related Discussions:- Animal reproduction

Cnidarians: obelia, why is obelia considered to be of special interest in Z...

why is obelia considered to be of special interest in Zoology as an animal showing an intermediate grade of organisation

Why is water conservation in c3 c4 and cam plants important, Why is water c...

Why is water conservation in c3 c4 and cam plants important? Cam stands for Crassulacean acid metabolism. C3 and C4 conserve less water than Cam plants. Actually, C4 plan

Skeletal system - face, FAC E - It lies under the anterior part of ...

FAC E - It lies under the anterior part of cranium. It is composed of 14 bones. These includes 2 nasals, 2 maxillae, 2 palatine, 2 zygomatic, 2 lacrymals, 2 inferior

Minerals requirements during congestive cardiac failure, Q. Minerals requir...

Q. Minerals requirements during congestive cardiac failure? Minerals: Since sodium and potassium are the major electrolytes associated with oedema, it is important that sodium

Define titrimetric estimation of carbohydrates, Define Titrimetric Estimati...

Define Titrimetric Estimation of Carbohydrates? The Fehling's Soxhlet method is the commonly used method for titrimetric estimation of carbohydrates. In the following section y

Which are intracellular organelles present in bacteria, Q. Which are intrac...

Q. Which are intracellular organelles present in bacteria? Considering typical eukaryotic cell organelles heterotrophic bacteria have ribosomes essential for protein synthesis.

Portal circulation, POR T AL CIRCULATION When a vein branches into se...

POR T AL CIRCULATION When a vein branches into set of capillary to distribute blood in some parts, such venous circulation is called portal system. Three types of portal syst

What are the two reproductive novelties of beings, Compared to amphibians w...

Compared to amphibians what are the two reproductive novelties of beings of the class Reptilia for the survival in dry environments? Compared to amphibians the two major reprod

Amoeba, figure of contractile vacuole of amoeba

figure of contractile vacuole of amoeba

What are the hyphae and the mycelium of pluricellular fungi, What are the h...

What are the hyphae and the mycelium of pluricellular fungi? The major structures of pluricellular fungi are the hyphae (threadlike filaments made of contiguous uni or multinuc

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd