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Here you will get the NCERT Solutions for CBSE Class 10 Science chapter 8, How Do Organisms Reproduce. All the solutions have been revised by subject experts to provide an error free study material to our students.
All the class 10 Science NCERT solutions have been collated in PDF format which students may easily download free of cost.
Some of the questions and their solutions from NCERT Solutions for Class 10: How Do Organisms Reproduce, are as follows:
Q. Why is DNA copying an essential part of the process of reproduction?
Sol. The creation of DNA copy is essential to produce organisms which are similar to their parents. As copying brings some variations each time, the surviving cells are similar but subtly different from each other. This tendency for variation during reproduction brings variations among the individuals of the same species.
Q. If a woman is using a copper T, will it help in protecting her from sexually transmitted diseases?
Sol. No, because cooper T will not prevent the contact of body fluids. It only prevents the implantation of the fetus into the uterus. Thus, it will not protect her from sexually transmitted diseases.
Q. How does the embryo get nourishment inside the mother’s body?
Sol. All the requirements of the developing foetus like nutrition, respiration and excretion etc are met through placenta.
After implantation, a special disc like tissue develops between uterus wall and the embryo. In placenta, the embryo’s blood vessels are close to mother’s blood vessels but they are not joined. Because of the two sets of blood vessels are close to each other, exchange of substances takes place.
Q. How are the modes for reproduction different in unicellular and multicellular organism?
Sol. Unicellular organisms are single celled so they reproduce asexually. Budding, Fission, Fragmentation are some of the asexual methods. On the other hand, multi cellular organisms are composed of complex body systems (organ systems). They have specialized organs called gonads which produce respective haploid gametes. These gametes fuse to form a diploid zygote. Therefore, higher multicellular organisms like animals, plants and humans reproduce sexually.
Get the complete the NCERT solutions for Class 10: How Do Organisms Reproduce, from the following link:
Class 10 Science NCERT Chapter: How Do Organisms Reproduce
Before solving the questions given in the Class 10 Science NCERT chapter- How Do Organisms Reproduce, students should thoroughly read this chapter to grasp all the concepts explained in it. This will help you understand the problem discussed in a question and then come with an appropriate answer.
Main topics discussed in Class 10 Science chapter: How Do Organisms Reproduce are:
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