Fossils
Fossils
Fossils:
These are the dead and decayed remains of organisms from the geological past, i.e. preserved traces of living organisms that lived millions of years ago. It is not always necessary that every part of a dead organism decomposes, e.g. a dead insect caught in a hot mud. The mud does not allow the insect to decompose quickly. On the contrary, the mud will eventually harden and retain the impression of the body parts of the insect. This provides us evidence about the presence of insect and also tells us about the structure of the insect. Imprints of leaves, stems, footprints, skin impressions and other traces provide indirect evidences of past life. In other words, fossils record helps us to analyse the connections between the Earth’s and life’s evolution. By this, we can reconstruct the patterns and trends that existed in the history of life. Science of fossils is known as paleontology.
Kinds of Fossils:
Fossils are of various kinds like tree trunk fossils, invertebrate fossils (Ammonite), fish fossils (Knightia) and dinosaur skull fossils (Rajasaurus recently found in Narmada valley) depending upon their differences in appearance and detail and mode of preservation. A fossil Archaeopteryx is the connecting link between birds and reptiles. This is because; it has feathered wings and beak like those of birds, but teeth and tail like those of reptiles. So, it is considered that birds have evolved from reptiles. Thus, fossils provide evidence that living beings (plants and animals) that exist today have originated from primitive organisms through the process of organic evolution.
Which of the following are correct ? (a) A fossil archaeopteryx is the connecting link between birds and reptiles. (b) Fossils are used to determine the history of plants and animals. (c) Science of fossils is known as paleontology. | |||
| Right Option : D | |||
| View Explanation |
Science of fossils is known as ___________________ . | |||
| Right Option : A | |||
| View Explanation | |||
Age of Earth is about _________________ | |||
| Right Option : A | |||
| View Explanation | |||
Students / Parents Reviews [10]
One of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Aman Kumar Shrivastava
10thMy experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Shivam Rana
7thA marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
Archit Segal
7thAbhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
10thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thMy experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Ayan Ghosh
8thI have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
Yatharthi Sharma
10thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
8thIt has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
Barkha Arora
10thIt was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
