REPRODUCTION IN ORGANISMS

Each and every organism can live only for a certain period of time. The period from birth to natural death of an organism represents its life span. Life span of few organisms are............ (in Years)

Elephant                                              70-80 years
Dog                                                    13-15 years
Cat                                                     25 years
Lion                                                    35 years
Horse                                                 40 years
Butter Fly                                           1-2 weeks
Crow                                                 15 years
Parrot                                                140 years
Cow                                                   22 years
Crocodile                                           60 years
Fruit Fly                                             24 Hours
Tortoise                                              100-150 years
Rose                                                  15 years
Banana tree                                        15 years
Rice plant                                            3-7 months
Banyan tree                                        400 years or more than..................

                                                         It is interesting and intriguing to note that it may be as short as few days or as long as a few thousand years? Between these two extremes are the life spans of most other living organisms.The life spans of organisms are not necessarily correlated with their sizes; the sizes of crows and parrots are not very different yet their life spans show a wide differences.Similarly, a mango tree has a much shorter life span as compared to a peepal tree.Whatever be the life span, death of every individual organism is certainty. i.e., no individual is immortal, except single-celled organisms.

Now you may be think about "Why there is no natural death in single-celled organisms "?
Ans: There is no natural death takes place in single cell organism.Because in single cell organisms,they produce next generation by binarry fission.That means the mother cell divides into two daughter cells.
new single cell organism is formed.

Have you ever wondered how vast number of plant and animal species have existed on earth for several thousands of years? There must be  some processes in living otganisms that ensure this continuity. Yes i am talking aabout Reproduction, Something that we granted.

Reproduction is defined as a biological process in which as organism gives rise to Young ones(off springs)similar to it self.
In Simple words REPRODUCTION is the process of formation of off springs by Asexual or Sexual means.

There is a large diversity in the biological world and each organism has evolved its own mechanism to multipl and produce offspring.The organism's habitat, its internal physiology and several other factors are collectively responsible for how it reproduces.

Amoeba reproduces by Binary Fission (Asexual Reproduction).

It divides in half by a process called fission, producing two smaller daughter cells.This is an example for there is no natural death in single-celled organisms

Hydra reproduces both asexually and sexually. Asexual Reproduction takes by Budding method.
In Hyda small bud are develop in the body then the buds are transforms into new offsprings