Question

A living connecting link which provides evidence for organic evolution is
A. Archaeopteryx between reptiles and mammals
B. Lungfish between Maces and reptiles
C. Duckbill Platypus between reptiles and mammals
D. Sphenodon between reptiles and birds

Answer 1

Hint: Mammary glands such as hair, diaphragm present in the duck billed Platypus is an egg laying in the mammal but resembles reptiles in having large coracoid in pectoral girdle or production of the amniotic eggs during the process. And link between the evidence in favor of organic evolution with the help of Archaeopteryx.

Complete answer:
Research in a variety of disciplines over many decades that demonstrates all life present on the earth comes from single ancestors is the evidence of common descent of living organisms. The evidence on which evolutionary theory rests is an important part of the evidence that demonstrates that evolution does occur and process is created by the Earth’s biodiversity.
The current scientific theory supports the modern evolutionary synthesis and explains the life changes on the earth by developing testable predictions, constructing theories and testing hypotheses. The phylogenetically organisms that obtained with the comparison of DNA genetic sequence have a closer degree of DNA as compared to the organism that are phylogenetically distant. And all the processes generated with the help of “molecular clock”.

Therefore the correct option is (C).

Note: Organic evolution is the morphological deviations for the particular structure present in the different groups of organisms that have different functions but have common origin for the all groups ‘that process known as homologous organs. And duck billed is known as the connecting tissue present between the two different organisms such as mammals and reptiles.