Describe the theory of evolution of life (organic evolution).

Ans. 1. According to the theory of evolution of life, a life-substance appeared on the earth in sea water. 

2. During the course of time, this living substance developed into an unicellular form of life.

3. Then some gradual and orderly changes took place in this unicellular form and it developed into multicellular forms of greater and greater complexity. Then behavioural patterns also gradually underwent many changes. 

4. These changes were slow and sequential and took nearly 300 crores of years. 

5. These changes and development of living things took place in all aspects and that gave way for many different kinds of living things to come into existence. Hence this process is called the evolution of life on earth, which is also referred to as organic evolution. 

6. Organic evolution is thus the progressive development of animals and plants from ancestors of different forms and functions. 

7. Organic theory of evolution is the most accepted theory as it answers many questions like how life came into existence, how various forms developed and how more competent species came into existence. 

8. Various types of evidences are also available to support the theory. In spite of many adaptive differences in protoplasm and cells, their manifestations of life processes like growth, reproduction, metabolism are essentially the same in all organisms. 

No comments:

PDF FILE TO YOUR EMAIL IMMEDIATELY PURCHASE NOTES & PAPER SOLUTION. @ Rs. 50/- each

SSC MATHS I PAPER SOLUTION

SSC MATHS II PAPER SOLUTION

SSC SCIENCE I PAPER SOLUTION

SSC SCIENCE II PAPER SOLUTION

SSC ENGLISH PAPER SOLUTION

SSC & HSC ENGLISH WRITING SKILL

HSC ACCOUNTS NOTES

HSC OCM NOTES

HSC ECONOMICS NOTES

HSC SECRETARIAL PRACTICE NOTES

You can also pay the necessary amount (Rs. 50 for Each Notes) to our UPI ID:

After paying Rs. 50 you will get your notes and paper solution either by email or through WhatsApp in PDF digital form.


If you are not certain how this will work then please contact on this number: 8169449238 (Only WhatsApp) No personal Calls allowed. All the best for upcoming Board Exam.


2019 Board Paper Solution

HSC ENGLISH SET A 2019 21st February, 2019

HSC ENGLISH SET B 2019 21st February, 2019

HSC ENGLISH SET C 2019 21st February, 2019

HSC ENGLISH SET D 2019 21st February, 2019

SECRETARIAL PRACTICE (S.P) 2019 25th February, 2019

HSC XII PHYSICS 2019 25th February, 2019

CHEMISTRY XII HSC SOLUTION 27th, February, 2019

OCM PAPER SOLUTION 2019 27th, February, 2019

HSC MATHS PAPER SOLUTION 2nd, March, 2019

SSC ENGLISH STD 10 5TH MARCH, 2019.

HSC XII ACCOUNTS 2019 6th March, 2019

HSC XII BIOLOGY 2019 6TH March, 2019

HSC XII ECONOMICS 9Th March 2019

SSC Maths I March 2019 Solution 10th Standard11th, March, 2019

SSC MATHS II MARCH 2019 SOLUTION 10TH STD.13th March, 2019

SSC SCIENCE I MARCH 2019 SOLUTION 10TH STD. 15th March, 2019.

SSC SCIENCE II MARCH 2019 SOLUTION 10TH STD. 18th March, 2019.

SSC SOCIAL SCIENCE I MARCH 2019 SOLUTION20th March, 2019

SSC SOCIAL SCIENCE II MARCH 2019 SOLUTION, 22nd March, 2019


BUY FROM PLAY STORE

DOWNLOAD OUR APP



HOW TO PURCHASE OUR NOTES?




S.P. Important Questions For Board Exam 2020


O.C.M. Important Questions for Board Exam. 2020


Economics Important Questions for Board Exam 2020


Chemistry Important Question Bank for board exam 2020


Physics – Section I- Important Question Bank for Maharashtra Board HSC Examination


Physics – Section II – Science- Important Question Bank for Maharashtra Board HSC 2020 Examination


MUST REMEMBER THINGS on the day of Exam


Are you prepared? for English Grammar in Board Exam.


Paper Presentation In Board Exam


How to Score Good Marks in SSC Board Exams


Tips To Score More Than 90% Marks In 12th Board Exam


How to write English exams?


How to prepare for board exam when less time is left


How to memorise what you learn for board exam