NCERT Solutions Class 12 Biology Chapter 1 Reproduction in Organisms

Scroll down to download pdf file

NCERT Solutions Class 12 Biology Chapter 1 Reproduction in Organisms The NCERT solutions for Class 11 Mathematics have been made by Mathematics teacher of one of the best CBSE school in India. These NCERT solutions have been made to give detailed answers and expanations of the concepts as per NCERT which can be easily understood by the students. Refer to other links also to download mathematics NCERT solutions, worksheets, sample papers and Exemplar Solutions.

Class 12 Biology

NCERT Solutions

Chapter 1 Reproduction in Organisms

Question 1: Why is reproduction essential for organisms?

Answer Reproduction is a fundamental feature of all living organisms. It is a biological process through which living organisms produce offspring’s similar to them. Reproduction ensures the continuance of various species on the Earth. In the absence of reproduction, the species will not be able to exist for a long time and may soon get extinct.

Question 2: Which is a better mode of reproduction sexual or asexual? Why?

Answer Sexual reproduction is a better mode of reproduction. It allows the formation of new variants by the combination of the DNA from two different individuals, typically one of each sex. It involves the fusion of the male and the female gamete to produce variants, which are not identical to their parents and to themselves. This variation allows the individual to adapt to constantly changing and challenging environments. Also, it leads to the evolution of better suited organisms which ensures greater survival of a species. On the contrary, asexual reproduction allows very little or no variation at all. As a result, the individuals produced are exact copies of their parents and themselves.

Question 3: Why is the offspring formed by asexual reproduction referred to as clone?

Answer A clone is a group of morphologically and genetically identical individuals. In the process of asexual reproduction, only one parent is involved and there is no fusion of the male and the female gamete. As a result, the offsprings so produced are morphologically and genetically similar to their parents and are thus, called clones.

Question 4: Offspring formed due to sexual reproduction have better chances of survival. Why? Is this statement always true?

Answer Sexual reproduction involves the fusion of the male and the female gamete. This fusion allows the formation of new variants by the combination of the DNA from two (usually) different members of the species. The variations allow the individuals to adapt under varied environmental conditions for better chances of survival. However, it is not always necessary that the offspring produced due to sexual reproduction has better chances of survival. Under some circumstances, asexual reproduction is more advantageous for certain organisms. For example, some individuals who do not move from one place to another and are well settled in their environment. Also, asexual reproduction is a fast and a quick mode of reproduction which does not consume much time and energy as compared to sexual reproduction.

Please click the link below to download NCERT Solutions Class 12 Biology Chapter 1 Reproduction in Organisms.

 

Tags: 


Click on the text For more study material for Biology please click here - Biology

Latest CBSE News

  • So far, the practical examinations of students appearing for the Central Board of Secondary Education (CBSE) were held at home centres, but from now on this year, plans like conducting practical exams at the external centres just like the board, theory paper is conducting. As per the latest CBSE updates, the CBSE will bring new changes in the marking system of practical examinations, and it is...
  • With the increasing number of new technologies and an increasing global population, self-study is growing. Education is no longer restricted to just the classroom. For high school self-study is very important because class 10 and class 12 sets the base for life. Also, self-studying habits help high school students in preparing for a more independent learning environment in college. Download...
  • Board exams play a very important role in our lives. It boosts our knowledge and also helps to know our status in academic life. Both class 10th and class 12th play a very significant role in a student’s life.It also helps inselecting the stream of their own choice. So that in later, they can’t regret their decisions. Board exams are key factors in determining the course of student’s careers....
  • Last month Delhi government announced that the students of government schools will not be charged any fees to the Central Bureau of Secondary Education (CBSE). Well, Delhi Education Minister Manish Sisodia said this while addressing students during a function at the Thyagraj Stadium in New Delhi. All the Delhi government schools are affiliated to the CBSE as a board of education. As the Sisodia...
  • “Education is what remains after one has forgotten what one has learned in school”-AlbertEinstein The statement is indeed true but doesn’t mistake it to be limited to academic education. It clearly implies both types of education-Academic and Non-Academic. Academic education nurtures the brain with the study related knowledge but non-academic helps to recognize the skills one possesses and...
  • We all know CBSE has conducted every year board exams for class 10. As soon as we land in class 10, everyone starts suggesting different things. They tell us to study hard because this is the first step towards your career. If you are willing to take science stream in class 11th and 12th, then it is very important to get good marks in class 10. So that you can easily take your stream. Check out...
  • While the long-standing standards for picking streams in our nation have settled that toppers and tutorially-skilled undergrads normally float towards science, it's pursued being toppled. Undergrads, today, are proactively picking the business stream, regardless of their scholarly standing. In this way, in case you're needing to pick your stream once you are done with tenth, or have just settled...