NCERT Solutions for Class 10 Science Chapter 8 How do Organisms Reproduce?
NCERT Solutions for Class 10 Science Chapter 8: How do Organisms Reproduce? - As per the CBSE Syllabus 2023–24, this chapter has been renumbered as Chapter 7. Various organisms use different modes of reproduction depending on their body design, as given in the NCERT Textbook. Also, in fission, many bacteria and protozoa simply divide into two or more daughter cells, and organisms such as hydra can regenerate if they are broken into pieces. Such facts with a lot of examples are given in NCERT solutions for Chapter 8 Science Class 10: How do Organisms Reproduce? All the questions given in Chapter 8 of the NCERT Class 10 Science book are answered in these How Do Organisms Reproduce Class 10 Solutions. In the Biology NCERT Solutions for Class 10 Science Chapter 8, you are also going to study sexual and asexual reproduction in humans and plants.
NCERT Solutions for Class 10 Science Chapter 8 How do Organisms Reproduce? Biology NCERT Solutions Class 10 Science Chapter 8: As you go through the Class 10 Science Chapter 8 Question Answer, students will get the solutions for the questions given in NCERT textbook. The detailed solutions to the NCERT textbook questions are given so that students can compare their solutions to the model ones. Class 10 Science Chapter 8 Question Answer briefly explains the NCERT Textbook exercises questions. Candidates will be able to achieve high marks in the science subject by using the Reproduction Class 10 Questions and Answers. Read on to find out everything about NCERT Solutions Class 10 Science Chapter 8 How do organisms reproduce?.
VMC VIQ Scholarship Test
Register for Vidyamandir Intellect Quest. Get Scholarship and Cash Rewards.
Pearson | PTE
Register now for PTE & Unlock 20% OFF : Use promo code: 'C360SPL20'. Valid till 30th NOV'24! Trusted by 3,500+ universities globally
Download the NCERT Solutions for Class 10 Science Chapter 8 How Do Organisms Reproduce PDF for free. According to the CBSE Syllabus 2023–24, this chapter has been renumbered as Chapter 7.
NCERT Solutions for Class 10 Science Chapter 8 How do Organisms Reproduce - Download PDF
Download PDF
Also Read
NCERT Solutions for Class 10 Science Chapter 8 - How do Organisms Reproduce? (Intext Questions)
Class 10 Chapter 8 Science
Topic 8.1 Do organisms create exact copies of themselves: Page Number 128
Q. 1. What is the importance of DNA copying in reproduction?
Answer:
Importance of DNA copying in reproduction
- It keeps the characteristics of the parent species
- the characteristics and features are transferred to their progeny
- It produces variation in an organism which is the basis of the evolution of new species
Q. 2. Why is variation beneficial to the species but not necessarily for the individual?
Answer:
Variations are beneficial for the survival of the species. Populations of organisms fill well-defined places in the ecosystem, using their ability to reproduce. However, these places can change for reasons beyond the control of the organisms and could even wipe out the entire population. However, if some variations were to be present in a few individuals in these populations, there would be some chance for them to survive.
For example, - If there were a population of bacteria living in temperate waters and the water temperature were to be increased by global warming. Most of these bacteria would die, but the few heat resistant variants would survive and grow further. Variation is thus useful for the survival of species over time.
How do Organisms Reproduce Class 10, Topic 8.2 - Modes of Reproduction Used by Single Organisms:
Page Number 133
Q. 1. How does binary fission differ from multiple fission?
Answer:
Difference between binary fission and multiple fission-
| BINARY FISSION | MULTIPLE FISSION |
| 1. An organism divides into two similar organism. | 1. An organism produces two or more organism. |
| 2. Does not form any layer. | 2. A cryst or thick layer is formed around the cell. |
3. It generally occurs in optimal condition.
example- Amoeba | 3. It can take place in any conditions.
example- Malarial parasite, Plasmodium |
Q. 2. How will an organism be benefited if it reproduces through spores?
Answer:
An organism is benefited if it reproduces through spores because spores are surrounded by a thick layer and due to this they can be protected in adverse conditions. In favourable condition, these spores continue to grow again.
In this way, they can manage to survive in unfavourable condition.
Q. 5. Why is DNA copying an essential part of the process of reproduction?
Answer:
DNA copying is an essential part of the process of reproduction so that the characteristics of the parent species are transmitted to it's down the line (offspring) and at the same time some variation also produced in the offspring.
This changes in the DNA provides an organism with the capability to survive in the changing condition.
NCERT Solutions Class 10 Science Chapter 8 How Do Organisms Reproduce, Topic 8.3 - Sexual reproduction: Page Number 140
Q. 1. How is the process of pollination different from fertilisation?
Answer:
Difference between pollination and the fertilization-
Pollination is the transfer of pollen grains from another stamen to the stigma of a capel. It takes place by certain pollinating agents such as air, water, birds and some insects etc.
On the other hand, fertilisation occurs when the male and female gametes fuse. It occurs inside the ovule and leads to the zygote formation.
Q. 2. What is the role of the seminal vesicles and the prostate gland?
Answer:
The role of the seminal vesicles and the prostate gland-
(i) Both secrets fluids which forms a part of the semen. The fluid of seminal vesical form 60% of the semen and the rest are from the prostate glands. It makes the path smooth through which sperm travels.
(ii) This fluid protects the sperm from the acid present in the urethra
(iii). Also, they can provide nutrition to the sperm in the form of calcium, fructose and some enzymes.
Q. 3. What are the changes seen in girls at the time of puberty?
Answer:
At the age of puberty, The following changes occur in girls-
- Mammary glands develop and enlarge.
- Hair grows under armpits and pubic region.
- Fallopian tube, uterus and vagina enlarge
- Menstruation starts
- Ovaries start to release eggs.
NCERT Solutions Class 10 Science Chapter 8 How do Organisms Reproduce - Chapter-End Exercise:
Q. 1. Asexual reproduction takes place through budding in
(a) amoeba.
(b) yeast.
(c) plasmodium.
(d) leishmania.
Answer:
The correct option is (b). In asexual reproduction, an offspring is reproduced from a single parent species. Yeast can reproduce by budding methods.
Q. 3. The anther contains
(a) sepals.
(b) ovules.
(c) pistil.
(d) pollen grains.
Answer:
The correct option is (d). The anther is a part of stamen which contains pollen grains.
Q. 4. What are the advantages of sexual reproduction over asexual reproduction?
Answer:
Advantages of sexual reproduction:
- In sexual reproduction, more variations are produced. Thus, it ensures the survival of species in a population.
- The newly formed individual has characteristics of both the parents.
- Variations are more viable in sexual mode than in asexual one. This is because, in asexual reproduction, DNA has to function inside the inherited cellular apparatus.
Q. 6. Why does menstruation occur?
Answer:
If the egg of the female does not get fertilised with the sperm, then the thick and soft lining of the uterus is no longer needed, and thus it breaks. Therefore, the lining of the uterus along with the blood vessels and the dead ovum (egg) comes out from the vagina in the form of blood called menstruation.
Q. 8. What are the different methods of contraception?
Answer:
The different method of contraception are as follows-
- Barrier method- In this method, condom, diaphragm and cervical caps are used. They prevent the entry of the sperm inside the female body during intercourse.
- Chemical method- In this method, women uses pills to suppress the release of an ovum in the fallopian tube.
- Contraceptive devices- Intrauterine contraceptive devices such as copper-T are placed in the uterus, and it prevents the sperms from reaching the uterus.
- Surgical method- In this method, vas deferens of the male and fallopian tube of the female is cut or tied by surgery.
Q. 9. How are the modes for reproduction different in unicellular and multicellular organisms?
Answer:
Difference between mode of reproduction in a unicellular and multicellular organism-
| IN UNICELLULAR | IN MULTICELLULAR |
1. Asexual reproduction takes place in the unicellular organism.
2. Only one Parent is required to produce offspring.
3. No special cells and organs are present for reproduction. | 1. Sexual reproduction takes place in the multicellular organism.
2. A male and female both are required in this method.
3. Special cell and organs are presents for reproduction |
NCERT Solutions for Class 10 Science: Important Formulas and Diagrams + eBook link
Class 10 Ch 8 Science: When it comes to science, apart from the Class 10 Science Chapter 8 Question Answer, gathering the most crucial formulas, diagrams, and points in a single location allows for a quick glance and an instant reminder, which can reduce revision time once the concepts are understood.
These equations, diagrams, and key ideas will appear frequently in your final exams and monthly tests. After going through the How Do Organisms Reproduce Class 10 Solutions, go through this ebook to save time and quickly review each crucial formula with examples from Ch 8 Science Class 10 that you might see on your exams.
Download Ebook - NCERT Class 10 Science: Chapterwise Important Formulas, Diagrams, And Points
NCERT Solutions for Class 10 Science Chapter 8 How Do Organisms Reproduce?: Topics And Subtopics
Let's take a quick look at the topics and subtopics covered in NCERT Solutions For Class 10 Science Chapter 8 How Do Organisms Reproduce? before diving into the specifics of how do organisms reproduce class 10 extra questions and answers:
- How Do Organisms Reproduce?
- Do Organisms Create Exact Copies Of Themselves?
- Modes Of Reproduction Used By Single Organisms
- Sexual Reproduction
CBSE NCERT Solutions for Class 10th Science: Chapter-wise
NCERT Solutions for Class 10 Science Chapter 8 - Types of Questions and Their Weightage in Board Exams
In Chapter 8 Class 10 Science, very short answers, short answers, long answers, and practical-based questions are asked in Class 10 CBSE Science board exam. These questions range between 1 and 5 marks.
Ch 8 Science Class 10 carries a weightage of 8–10 marks in the exam. How do organisms reproduce Class 10 Solutions help students get those 8–10 marks in board exams if they go through the solutions thoroughly.
Careers360 provides NCERT solutions that are available for Classes 6 to 12. Also, check the NCERT solutions for Class 10 for other subjects.
More about How do Organisms Reproduce Class 10 Science Solutions
Ch 8 Class 10 Science: Reproduction, unlike other life processes, is not essential to maintaining the life of an individual organism. Such a fact is presented and explained in How Do Organisms Reproduce Solutions of Chapter 8 Class 10 Science?
Reproduction involves the creation of a DNA copy and additional cellular apparatus by the cell involved in the process.
In this How Do Organisms Reproduce Class 10 Questions and Answers, you are going to study broadly on three topics:
- Modes of reproduction used by single organisms
- Sexual and asexual reproduction
- Do organisms create exact copies of themselves?
Benefits of NCERT Solutions Class 10 Science Chapter 8 - How do Organisms Reproduce
- Important tips and facts are given in How do Organisms Reproduce Class 10 Solutions with the appropriate examples and diagrams, which aid in remembering topics easily.
- There is a concept behind every question in Ch 8 Science Class 10. Such concepts have been explained in the Class 10 Science Chapter 8 NCERT solutions.
- Examples given in NCERT Class 10 Science Chapter 8 Solutions are based on real-life scenarios. Therefore, students can relate them to their surroundings.
Highlights of NCERT Solutions for Class 10 Science Chapter 8 How do Organisms Reproduce?
- The NCERT (CBSE) Syllabus and Books are strictly followed in the How Do Organisms Reproduce Class 10 Solutions.
- Ch 8 Science Class 10 are easy-to-understand and comprehensive.
- On this page, you will find clear and concise solutions to Class 10 Chapter 8 Science.
- The How Do Organisms Reproduce Class 10 PDF help clear doubt and give in-depth knowledge of concepts.
- Class 10 Science Chapter 8 Question Answer are prepared by subject matter experts in the easiest possible way.
- All the exercise questions and in-text solved questions are available in the Chapter 8 Science Class 10 PDF.
- Step-wise solutions are provided herein in Class 10 Science Ch 8 Question Answer.
- Diagrams are provided in the "How do Organisms Reproduce Class 10 Solutions PDF, wherever required, to better understand.
- Class 10 Science Ch 8 Solutions will help you score well in board exams.
- How Do Organisms Reproduce Class 10 Questions and Answers PDF is accessible to everyone at any time, anywhere, without any difficulty.
- This page contains a free How do Organisms Reproduce Class 10 NCERT Solutions PDF.
- For CBSE exams, Science Olympiads, and other competitive exams, these solutions for Biology Class 10 How Do Organisms Reproduce will be useful.
NCERT Solutions for Class 10 | Subject-wise Links
Also check the NCERT Books and NCERT Syllabus here:
