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प्रश्न
Write a note on the significance of Palaeontology.
उत्तर
- It is useful in the reconstruction of the phylogeny.
- It helps in studying various forms and structures of extinct animals.
- It provides a record of missing links between two groups of organisms.
- It helps to reconstruct the palaeoecology and palaeoenvironment of a selected area.
- It helps in the study of the habits of extinct organisms.
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संबंधित प्रश्न
Name the scientists who Discovered the fossil of Australopithecus
X, Y, and Z are three animals. The animal X can fly but animal Y can only run on ground or walls. The forelimbs of animals X and Y have the same basic design but they are used for different purposes such as flying and running respectively. The animal Z became extinct an long time ago. The study of fossils of Z tells us that it had some features like those of X and some like those of Y. In fact, Z is said to form a connecting link in the evolutionary chain of X and Y.
(a) What could the animals X, Y and Z be?
(b) What name is given to the forelimbs like those of X and Y which have the same basic design but different functions?
(c) Name one feature in which Z resembled X.
(d) Name one feature in which Z resembled Y.
(e) Which is the correct evolutionary chain involving X, Y and Z : X → Z → Y or Y → Z → X?
Observe the following images and answer the questions.
- Which evolutionary evidences are indicated in the given picture?
- How are they formed?
- Which method is used to measure their age or their time?
Homologous organs and vestigial organs are examples of ______ type of evidence in evolution.
Evolution has exhibited a greater stability of molecular structure when compared with morphological structures. Comment on the statement and justify your opinion.
Cucurbits do not develop thick and woody stem as they are:
Fossils are generally found in ______.
How do we compute the age of a living tree?
Complete the following chart:
What is the function of the appendix of our digestive system?
