Question

Explain with example the evidence in favour of evolution of an organism

Answer 1

Answer:

The evidence which are in the favour of an evolution of organism are

• Evidence from Paleontology (study of fossils)
• Evidence from vestigial organs .
• Evidence from embryology.
• Evidence from comparative morphology and anatomy .

1. Homologous organ

2.analogous organ

• Evidence from bridge or connecting link organisms.

Explanation:

• Evidence from vestigial organ

- those organ which had some function in past in the organism body but not in present are vestigial or rudimentary organ. In our human body there are several vestigial organ which had no any function in our body but similarly that organ in other organism have function which says that other organisms and we human have same common ancestor in past but what happen we slowly reduce some organ use and this process continues due to which what happen slowly our organ started to lost it function and now in present it is rudimentary or vestigial organ.Foreg in our human body there is appendix which have no any function in our body but same appendix herbivorous animal have and it help to digest cellulose so we can understand that herbivorous animal and we human have common ancestor and we have evolved from that common ancestor .So,evidence from vestigial organ support or is in favour of evolution of an organism.

• Evidence from connecting link or bridge organism

- Those organism which fall in the two or more than two different group of organisms is called bridge organism or connecting link. It also supports in evolution of organism. by seeing bridge organism we can understand that organism have same common ancestor in past and from there only they have evolved .For eg:- platypus so the characteristics of reptiles ,bird,and mammal from here can understand that this all organism have same common ancestor in past and from reptiles, bird they have changed themselves to mammals so evolution is occurred so it support evolution of an organism.