What are fossils? What do they tell us about the process of evolution?
Fossils are the remains or impression of the ancient organisms preserved naturally. During the formation of sedimentary rocks, dead animals of the sea or the lakes and of the land sink down or are buried in the rocks. The animals, thus preserved in the rocks formed the fossils. Fossils are the main evidence which show the process of evolution from how the origination of life occurs in ancient times or how it has been started to the life found on earth in today’s time.
In the following crosses write the characteristics of the progeny
| Cross | Progeny |
|---|---|
|
(a) RR YY x RR YY |
................................... |
NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:
Fossils are the remains or impression of the ancient organisms preserved naturally. During the formation of sedimentary rocks, dead animals of the sea or the lakes and of the land sink down or are buried in the rocks. Th...
Step-by-step explanation:
• Fossils are the remains or impression of the ancient organisms preserved naturally
• During the formation of sedimentary rocks, dead animals of the sea or the lakes and of the land sink down or are buried in the rocks
• The animals, thus preserved in the rocks formed the fossils
• Fossils are the main evidence which show the process of evolution from how the origination of life occurs in ancient times or how it has been started to the life found on earth in today’s time
•
This question is important because it tests key concepts from the NCERT syllabus and is frequently asked in CBSE exams.
This question is based on core NCERT concepts explained in the chapter and should be revised thoroughly before exams.
Students often lose marks by skipping steps, writing incomplete explanations, or misunderstanding keywords used in the question.
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