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NCERT Solutions for Class 10 Science Chapter 8 How do Organisms Reproduce? in Hindi PDF Download
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We, at Vedantu, offer freeNCERT Solutions in English medium and Hindi medium for all the classes as well. Created by subject matter experts, these NCERT Solutions in Hindi are very helpful to the students of all classes.
NCERT Solutions for Class 10 Science Hindi Chapter 8 How Do Organisms Reproduce?
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1. अलैंगिक जनन मुकुलन द्वारा होता है।
(a) अमीबा
(b) यीस्ट
(C) प्लैज्मोडियम
(d) लेस्मानिया
उत्तर: (b) यीस्ट।
2. निम्न में से कौन मानव में मादा जनन तंत्र का भाग नहीं है?
(a) अंडाशय
(b) गर्भाशय
(C) शुक्रवाहिका
(d) डिंबवाहिनी
उत्तर: (c) शुक्रवाहिका।
3. परागकोश में होते हैं-
(a) बाह्यदल
(b) अंडाशय
(C) अंडप
(d) पराग कण
उत्तर: (d) पराग कण।
4. अलैंगिक जनन की अपेक्षा लैंगिक जनन के क्या लाभ हैं?
उत्तर: अलैंगिक जनन में प्राप्त संतति, जनक के लगभग समरूप होते हैं, क्योंकि इनमें एक ही जीव के डी०एन०ए० से प्रतिकृति प्राप्त होती है परंतु लैंगिक जनन में दो या दो से अधिक जीव भाग लेते हैं। अत: संयोजन अनोखा होता है तथा भिन्न जीवों से प्राप्त डी०एन०ए० अत्यधिक विभिन्नताओं को बढ़ावा देता है, जो विकास के लिए आवश्यक है।लैंगिक जनन में नए संयोजन के अवसर उत्पन्न होते हैं, जिससे नई स्पीशीज़ एवं जाति की उत्पत्ति होती है।
5. मानव में वृषण के क्या कार्य हैं?
उत्तर: मानव में वृषण के कार्य निम्न हैं-
शुक्राणु का निर्माण करना।
टेस्टोस्टेरोन हॉर्मोन का स्राव करना।
6. ऋतुस्राव क्यों होता है?
उत्तर: निषेचन नहीं होने की स्थिति में अंडाशय की अंत:भित्ति की मांसल एवं स्पंजी परत जैसी संरचना की आवश्यकता नहीं रहती, क्योंकि यह अंड के निषेचन होने की अवस्था में उसके पोषण के लिए आवश्यक होता है। अतः यह परत धीरे-धीरे टूटकर योनि मार्ग से रुधिर एवं म्यूकस के रूप में निष्कासित होती है। इस चक्र में लगभग एक माह का समय लगता है, इसे ऋतुस्राव या रजोधर्म कहते हैं।
7. पुष्प की अनुदैर्ध्य काट का नामांकित चित्र बनाइए।
उत्तर:
8. गर्भनिरोधन की विभिन्न विधियाँ कौन-सी हैं?
उत्तर: गर्भनिरोधन की विधियाँ निम्नलिखित हैं-
यांत्रिक अवरोध- ताकि शुक्राणु अंडकोशिका तक न पहुँच सकें। शिश्न को ढकने वाले कंडोम अथवा योनि में रखने वाले अनेक युक्तियाँ; जैसे-लूप अथवा कॉपर-टी को गर्भाशय में स्थापित करना।
हार्मोन संतुलन को परिवर्तन- ये दवाएँ मादा सामान्यतः गोली के रूप में लेती हैं, जिससे हॉर्मोन संतुलन में परिवर्तन हो जाता है तथा अंड का विमोचन ही नहीं होता है। अतः निषेचन नहीं हो पाता है।
शल्य क्रिया तकनीक- यदि पुरुष की शुक्रवाहिकाओं को अवरुद्ध कर दिया जाए तो शुक्राणुओं का स्थानांतरण रुक जाएगा। यदि मादा की अंडवाहिनी अथवा फैलोपियन नलिका को अवरुद्ध कर दिया जाए, तो अंड (डिंब) गर्भाशय तक नहीं पहुँच सकेगा, दोनों ही अवस्थाओं में निषेचन नहीं हो पाएगा।
9. एक-कोशिक एवं बहुकोशिक जीवों की जनन पद्धति में क्या अंतर हैं?
उत्तर: एक-कोशिक जीवों में जनन समान्तयः अलैंगिक जनन द्वारा होता है| एक-कोशिक प्रायः विखंडन, मुकुलन, पुनरुद्भवन, बहुखंडन आदि विधियों से जनन करते हैं। ये सरलता से कोशिका विभाजन के द्वारा तेज़ी से जनन कर सकते हैं।
बहुकोशिक जीवों में जनन क्रिया जटिल होती है और यह मुख्य रूप से लैंगिक जनन क्रिया ही करते है।
10. जनन किसी स्पीशीज की समष्टि के स्थायित्व में किस प्रकार सहायक हैं?
उत्तर: सजीवों के सभी प्रक्रमों में जनन एक आवश्यक प्रक्रिया है| जनन द्वारा ही जीव अपने अस्तित्व को बनाए रख सकते हैं| सजीव अपनी जनन क्षमता का उपयोग कर जीवों की समष्टि पारितंत्र में स्थान ग्रहण करते है | जनन के दौरान DNA प्रतिकृति का बनना जीव की शारीरिक संरचना एवं डिजाइन के लिए अत्यंत महत्वपूर्ण है जो उसे विशिष्ट निकेत के योग्य बनाती है|अतः हम कह सकते है कि किसी प्रजाति की समष्टि के स्थायित्व का संबंध जनन से है |
11. गर्भनिरोधक युक्तियां अपनाने के क्या कारण हो सकते हैं?
उत्तर: गर्भनिरोधक युक्तियाँ मुख्य रूप से गर्भ रोकने के लिए ही अपनाई जाती हैं। इनसे बच्चों की आयु में अंतर बढ़ाने में भी सहयोग लिया जा सकता है। ये अवांछित गर्भ को रोकती है इसलिए महिलाओं के अच्छे स्वास्थ्य को बनाये रखती है| गर्भनिरोधक विधि यौन संचारित रोगों से सुरक्षा प्रदान करती है|
NCERT Solutions for Class 10 Science Chapter 8 How do Organisms Reproduce? in Hindi
Chapter-wise NCERT Solutions are provided everywhere on the internet with an aim to help the students to gain a comprehensive understanding. Class 10 Science Chapter 8 solution Hindi mediums are created by our in-house experts keeping the understanding ability of all types of candidates in mind. NCERT textbooks and solutions are built to give a strong foundation to every concept. These NCERT Solutions for Class 10 Science Chapter 8 in Hindi ensure a smooth understanding of all the concepts including the advanced concepts covered in the textbook.
NCERT Solutions for Class 10 Science Chapter 8 in Hindi medium PDF download are easily available on our official website (vedantu.com). Upon visiting the website, you have to register on the website with your phone number and email address. Then you will be able to download all the study materials of your preference in a click. You can also download the Class 10 Science How do Organisms Reproduce? solution Hindi medium from Vedantu app as well by following the similar procedures, but you have to download the app from Google play store before doing that.
NCERT Solutions in Hindi medium have been created keeping those students in mind who are studying in a Hindi medium school. These NCERT Solutions for Class 10 Science How do Organisms Reproduce? in Hindi medium pdf download have innumerable benefits as these are created in simple and easy-to-understand language. The best feature of these solutions is a free download option. Students of Class 10 can download these solutions at any time as per their convenience for self-study purpose.
These solutions are nothing but a compilation of all the answers to the questions of the textbook exercises. The answers/ solutions are given in a stepwise format and very well researched by the subject matter experts who have relevant experience in this field. Relevant diagrams, graphs, illustrations are provided along with the answers wherever required. In nutshell, NCERT Solutions for Class 10 Science in Hindi come really handy in exam preparation and quick revision as well prior to the final examinations.
FAQs on NCERT Solutions for Class 10 Science Hindi Chapter 8 How Do Organisms Reproduce?
1. What is the correct stepwise method to solve NCERT questions from Class 10 Science Chapter 8 as per CBSE guidelines?
To solve NCERT questions from Chapter 8, follow this stepwise method:
- Read the question carefully to identify the reproduction type or biological term involved.
- Recall relevant textbook concepts and definitions.
- Break the answer into logical steps (such as defining, comparing, or explaining processes).
- Support explanations with scientific terms like DNA replication, gamete formation, or cell division.
- Include labelled diagrams where required, as per CBSE pattern.
- Ensure the answer is concise, accurate, and follows the textbook approach.
2. How do NCERT Solutions for Class 10 Science Chapter 8 help develop conceptual clarity in 'How Do Organisms Reproduce'?
NCERT Solutions provide structured, step-by-step answers as per the CBSE pattern. They guide students through key stages such as identifying modes of reproduction, comparing asexual and sexual reproduction, and understanding the significance of genetic variation. Each solution addresses common textbook queries, highlights important steps, and clarifies processes via labelled diagrams, ensuring a thorough conceptual grasp.
3. What are some common mistakes students make while answering questions on sexual and asexual reproduction, and how can NCERT Solutions help avoid them?
Common mistakes include confusing the processes of sexual and asexual reproduction, omitting essential steps in cell division, failing to mention the role of DNA, or missing diagrams. NCERT Solutions provide model answers with each step clearly outlined, ensuring that all critical aspects are addressed and reducing the likelihood of errors.
4. Why is it important to use diagrams in NCERT Solutions for Science Chapter 8, and what should students focus on when drawing them?
Diagrams are essential because they visually explain structures such as the human reproductive system, flower parts, or reproductive cycles. When drawing diagrams in answers:
- Ensure correct labelling of all parts.
- Keep illustrations neat and to the point.
- Use diagrams to support the explanation, not just decorative purposes.
5. According to NCERT Solutions, what are the main differences between reproduction in unicellular and multicellular organisms?
In unicellular organisms, reproduction typically occurs by asexual methods such as binary fission or budding, resulting in offspring identical to the parent. Multicellular organisms mainly reproduce sexually, involving the formation of gametes (egg and sperm), fertilisation, and genetic mixing, leading to variation among offspring.
6. How do NCERT Solutions ensure answers for Chapter 8 align with the latest CBSE Science syllabus for 2025–26?
NCERT Solutions for Chapter 8 are formulated strictly as per the CBSE Science syllabus 2025–26. They cover all textbook exercises, address updated content, and follow the latest CBSE answer structuring and marking schemes, ensuring students practice only what is required for the upcoming academic year.
7. What should students keep in mind while writing step-by-step answers in accordance with NCERT Solutions for maximum marks in exams?
Students should:
- Clearly state definitions and key points in the first step.
- Organise each part of the answer sequentially as per the process, experiment, or diagram involved.
- Use scientific vocabulary provided in the NCERT textbook.
- Mention advantages or significance when relevant (e.g., genetic variation in sexual reproduction).
- Conclude by summarising the key point of the answer, as shown in the model NCERT Solutions.
8. What is the value of practising exercise-wise NCERT Solutions for Chapter 8 in exam preparation?
Practising exercise-wise NCERT Solutions enhances understanding of all question types, familiarises students with the CBSE answer format, and builds confidence in tackling both short and long-form questions. It ensures thorough revision of concepts and maximises exam readiness.
9. How can students apply the step-by-step methods from NCERT Solutions to new or higher-order questions in exams?
By mastering the step-by-step methods from NCERT Solutions, students can tackle new or unfamiliar questions by logically breaking them down, recalling related textbook concepts, and presenting structured explanations. This skill is critical for answering application-based or HOTS questions confidently.
10. What is the significance of following the NCERT Solutions pattern in gaining marks for long-answer questions in CBSE Class 10 Science exams?
Adhering to the NCERT Solutions pattern ensures that all parts of a long-answer question—such as definitions, explanations, diagrams, comparisons, and examples—are included, which is crucial for full marks in CBSE exams. This method helps in structuring responses as per the official CBSE marking guidelines.
