Question

List three roles of fossils in tracing evolutionary relationships. With atleast 4 examples

Answer 1

Fossils are the remains of organisms that once existed on Earth, representing the ancestors of plants and animals which are alive today.

Three roles of fossils in tracing evolutionary relationships are:

Characteristics of past and present organisms: Fossils provide evidence of evolution by revealing the characteristics of the past organisms (and the changes that have occurred in these organisms) to give rise to a present organism.

Appearance of fossils: Fossils have the same shape as that of the original animal, but their colour and texture may vary greatly. The colour of a fossil depends upon the type of minerals that form it.

Age of fossils: Analysis of the fossils and depth at which thay are found tells us the age of fossils and the period in which they existed. Fossils found closer to the surface of the Earth are more recent than those present in the deeper layers of the soil strata.

Answer 2

>/ fossils can tell us the older climatic conditions.
>/fossils helps in calculating geological time.
>/helpful in study of evolution.
examples are: trilobite,ammonite,dinosaur's skull,etc