Academic session 2026-27, Chapter 7 in the current curriculum.
Welcome to the NCERT Solutions for Class 10 Science - Chapter How do Organism Reproduce?. This page offers a step-by-step solution to the specific question from Exercise 0, Question 39:
Is the chromosome number of zygote, embryonal cells and adult of a particular organism always constant? How is the constancy maintained in these three stages?
. With detailed answers and explanations for each chapter, students can strengthen their understanding and prepare confidently for exams. Ideal for CBSE and other board students, this resource will simplify your study experience.Is the chromosome number of zygote, embryonal cells and adult of a particular organism always constant? How is the constancy maintained in these three stages?
The number of the chromosomes in parents and offspring remains constant due to halving of chromosomes during the gamete formation and this takes place by the process of meiosis. Gametes contain only half of the amount of DNA from both the parents as compared to the normal cell. And, when the female gamete combines with the male gamete it will form a new zygote after the fertilization process and chromosomes become equal to that of somatic cells. And then the mitosis process takes place for the rest of the stages of the life cycle.
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:
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Welcome to the NCERT Solutions for Class 10 Science - Chapter . This page offers a step-by-step solution to the specific question from Excercise 0 , Question 39: Is the chromosome number of zygote, embryonal cells and adult of a particular organism always consta....
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