Petrified wood is a plant fossil.

Important Questions on Apply scientific ideas to construct an explanation for the anatomical similarities and differences among modern organisms and between modern and fossil organisms to infer evolutionary relationships.

HARD

Life Sciences>Biological Evolution: Unity and Diversity>Apply scientific ideas to construct an explanation for the anatomical similarities and differences among modern organisms and between modern and fossil organisms to infer evolutionary relationships.>Evidence of Common Ancestry and Diversity - Anatomical similarities and differences between various organisms living today and between them and organisms in the fossil record, enable the reconstruction of evolutionary history and the inference of lines of evolutionary descent.

Mention any three types of molecular evidences of evolution with example.

EASY

Life Sciences>Biological Evolution: Unity and Diversity>Apply scientific ideas to construct an explanation for the anatomical similarities and differences among modern organisms and between modern and fossil organisms to infer evolutionary relationships.>Evidence of Common Ancestry and Diversity - Anatomical similarities and differences between various organisms living today and between them and organisms in the fossil record, enable the reconstruction of evolutionary history and the inference of lines of evolutionary descent.

Give the example of connecting link between reptiles and birds.

EASY

Life Sciences>Biological Evolution: Unity and Diversity>Apply scientific ideas to construct an explanation for the anatomical similarities and differences among modern organisms and between modern and fossil organisms to infer evolutionary relationships.>Evidence of Common Ancestry and Diversity - Anatomical similarities and differences between various organisms living today and between them and organisms in the fossil record, enable the reconstruction of evolutionary history and the inference of lines of evolutionary descent.

Seymouria represents the evolutionary biological link between the following organisms

EASY

Life Sciences>Biological Evolution: Unity and Diversity>Apply scientific ideas to construct an explanation for the anatomical similarities and differences among modern organisms and between modern and fossil organisms to infer evolutionary relationships.>Evidence of Common Ancestry and Diversity - Anatomical similarities and differences between various organisms living today and between them and organisms in the fossil record, enable the reconstruction of evolutionary history and the inference of lines of evolutionary descent.

What is missing link ? Describe briefly with an example.

MEDIUM

Life Sciences>Biological Evolution: Unity and Diversity>Apply scientific ideas to construct an explanation for the anatomical similarities and differences among modern organisms and between modern and fossil organisms to infer evolutionary relationships.>Evidence of Common Ancestry and Diversity - Anatomical similarities and differences between various organisms living today and between them and organisms in the fossil record, enable the reconstruction of evolutionary history and the inference of lines of evolutionary descent.

What are connecting links? Is Archaeopteryx a connecting link? Give reasons in support of your answer.

MEDIUM

Life Sciences>Biological Evolution: Unity and Diversity>Apply scientific ideas to construct an explanation for the anatomical similarities and differences among modern organisms and between modern and fossil organisms to infer evolutionary relationships.>Evidence of Common Ancestry and Diversity - Anatomical similarities and differences between various organisms living today and between them and organisms in the fossil record, enable the reconstruction of evolutionary history and the inference of lines of evolutionary descent.

How the ages of fossils are calculated?

MEDIUM

Life Sciences>Biological Evolution: Unity and Diversity>Apply scientific ideas to construct an explanation for the anatomical similarities and differences among modern organisms and between modern and fossil organisms to infer evolutionary relationships.>Evidence of Common Ancestry and Diversity - Anatomical similarities and differences between various organisms living today and between them and organisms in the fossil record, enable the reconstruction of evolutionary history and the inference of lines of evolutionary descent.

If fossil x is older than fossil y, then

MEDIUM

Life Sciences>Biological Evolution: Unity and Diversity>Apply scientific ideas to construct an explanation for the anatomical similarities and differences among modern organisms and between modern and fossil organisms to infer evolutionary relationships.>Evidence of Common Ancestry and Diversity - Anatomical similarities and differences between various organisms living today and between them and organisms in the fossil record, enable the reconstruction of evolutionary history and the inference of lines of evolutionary descent.

What are fossils? Explain how palaeontological evidence shows that evolution of life forms has indeed taken place on Earth.

MEDIUM

Life Sciences>Biological Evolution: Unity and Diversity>Apply scientific ideas to construct an explanation for the anatomical similarities and differences among modern organisms and between modern and fossil organisms to infer evolutionary relationships.>Evidence of Common Ancestry and Diversity - Anatomical similarities and differences between various organisms living today and between them and organisms in the fossil record, enable the reconstruction of evolutionary history and the inference of lines of evolutionary descent.

Which of the following methods of dating fossils has recently been used to determine the age of hominid fossils in East Africa?

EASY

Life Sciences>Biological Evolution: Unity and Diversity>Apply scientific ideas to construct an explanation for the anatomical similarities and differences among modern organisms and between modern and fossil organisms to infer evolutionary relationships.>Evidence of Common Ancestry and Diversity - Anatomical similarities and differences between various organisms living today and between them and organisms in the fossil record, enable the reconstruction of evolutionary history and the inference of lines of evolutionary descent.

Which of the following is an avian character of Archaeopteryx?

EASY

Life Sciences>Biological Evolution: Unity and Diversity>Apply scientific ideas to construct an explanation for the anatomical similarities and differences among modern organisms and between modern and fossil organisms to infer evolutionary relationships.>Evidence of Common Ancestry and Diversity - Anatomical similarities and differences between various organisms living today and between them and organisms in the fossil record, enable the reconstruction of evolutionary history and the inference of lines of evolutionary descent.

Which one of the following in birds indicates their reptilian ancestry?

EASY

Life Sciences>Biological Evolution: Unity and Diversity>Apply scientific ideas to construct an explanation for the anatomical similarities and differences among modern organisms and between modern and fossil organisms to infer evolutionary relationships.>Evidence of Common Ancestry and Diversity - Anatomical similarities and differences between various organisms living today and between them and organisms in the fossil record, enable the reconstruction of evolutionary history and the inference of lines of evolutionary descent.

Archeopteryx, a transitional fossil between birds and reptiles was discovered from the rocks of following period

MEDIUM

Life Sciences>Biological Evolution: Unity and Diversity>Apply scientific ideas to construct an explanation for the anatomical similarities and differences among modern organisms and between modern and fossil organisms to infer evolutionary relationships.>Evidence of Common Ancestry and Diversity - Anatomical similarities and differences between various organisms living today and between them and organisms in the fossil record, enable the reconstruction of evolutionary history and the inference of lines of evolutionary descent.

The Coelacanth was caught in 1938 in South Africa. Why is it very significant in the evolutionary history of vertebrate?

EASY

Life Sciences>Biological Evolution: Unity and Diversity>Apply scientific ideas to construct an explanation for the anatomical similarities and differences among modern organisms and between modern and fossil organisms to infer evolutionary relationships.>Evidence of Common Ancestry and Diversity - Anatomical similarities and differences between various organisms living today and between them and organisms in the fossil record, enable the reconstruction of evolutionary history and the inference of lines of evolutionary descent.

According to Hardy-Weinberg’s principle, if allele one is denoted as ‘A’ and allele two as ‘a’ and their frequencies are denoted by p and q, and if random mating occurs. The frequency of heterozygous individual would be:

EASY

Life Sciences>Biological Evolution: Unity and Diversity>Apply scientific ideas to construct an explanation for the anatomical similarities and differences among modern organisms and between modern and fossil organisms to infer evolutionary relationships.>Evidence of Common Ancestry and Diversity - Anatomical similarities and differences between various organisms living today and between them and organisms in the fossil record, enable the reconstruction of evolutionary history and the inference of lines of evolutionary descent.

In which class of gymnosperms, fossils are present

EASY

Life Sciences>Biological Evolution: Unity and Diversity>Apply scientific ideas to construct an explanation for the anatomical similarities and differences among modern organisms and between modern and fossil organisms to infer evolutionary relationships.>Evidence of Common Ancestry and Diversity - Anatomical similarities and differences between various organisms living today and between them and organisms in the fossil record, enable the reconstruction of evolutionary history and the inference of lines of evolutionary descent.

Fossils act as evidences of organic evolution. Which one of these features do not justify the features of fossils?

EASY

Life Sciences>Biological Evolution: Unity and Diversity>Apply scientific ideas to construct an explanation for the anatomical similarities and differences among modern organisms and between modern and fossil organisms to infer evolutionary relationships.>Evidence of Common Ancestry and Diversity - Anatomical similarities and differences between various organisms living today and between them and organisms in the fossil record, enable the reconstruction of evolutionary history and the inference of lines of evolutionary descent.

Which of the following is the most acceptable method determining the age of recent fossils?

HARD

Life Sciences>Biological Evolution: Unity and Diversity>Apply scientific ideas to construct an explanation for the anatomical similarities and differences among modern organisms and between modern and fossil organisms to infer evolutionary relationships.>Evidence of Common Ancestry and Diversity - Anatomical similarities and differences between various organisms living today and between them and organisms in the fossil record, enable the reconstruction of evolutionary history and the inference of lines of evolutionary descent.

How has the study of fossil helped in convincing scientists that organisms have come into existence through evolution? How can the age of fossil be determined?

MEDIUM

Life Sciences>Biological Evolution: Unity and Diversity>Apply scientific ideas to construct an explanation for the anatomical similarities and differences among modern organisms and between modern and fossil organisms to infer evolutionary relationships.>Evidence of Common Ancestry and Diversity - Anatomical similarities and differences between various organisms living today and between them and organisms in the fossil record, enable the reconstruction of evolutionary history and the inference of lines of evolutionary descent.

What is the significance of Archoeopteryx in the study of organic evolution?

MEDIUM

Life Sciences>Biological Evolution: Unity and Diversity>Apply scientific ideas to construct an explanation for the anatomical similarities and differences among modern organisms and between modern and fossil organisms to infer evolutionary relationships.>Evidence of Common Ancestry and Diversity - Anatomical similarities and differences between various organisms living today and between them and organisms in the fossil record, enable the reconstruction of evolutionary history and the inference of lines of evolutionary descent.

Age of fossils in the past was generally determined by radio-carbon method and other methods involving radioactive elements found in the rocks. More precise methods, which were used recently and led to the revision of the evolutionary period for different groups of organisms, include