CBSE Class 4 Paryavaran Adhyayan (Aas Paas) Chapter 2: Kan-Kan Mein NCERT Solutions
This chapter, "Kan-Kan Mein" (In Every Ear), from CBSE Class 4 Paryavaran Adhyayan (Aas Paas) focuses on the diverse world of animal ears. Students will explore how different animals have distinct ear structures and how these are related to their hearing abilities and reproductive methods. The solutions cover exercises that involve matching ears to the correct animals, identifying animals with visible versus hidden ears, and understanding the basic concept that animals with visible ears typically give birth to live young, while those with hidden ears often lay eggs. These NCERT solutions provide clear explanations and step-by-step guidance to help students grasp these fundamental concepts, aiding in their exam preparation and understanding of the animal kingdom.
Quick info
| Board | CBSE |
|---|---|
| Class | Class 4 |
| Subject | Paryavaran Adhyayan (Aas Paas) |
| Session | 2026 |
| Language | Hindi |
| Type | NCERT Solutions |
| Chapter | Chapter 2 |
Chapter summary
Chapter 2, "Kan-Kan Mein," of the Class 4 Paryavaran Adhyayan (Aas Paas) textbook delves into the fascinating topic of animal ears. The NCERT solutions provided here clarify the exercises related to identifying animals based on their ears, distinguishing between animals with external and internal ears, and understanding the general rule connecting ear visibility to reproduction (live birth vs. egg-laying). This chapter aims to build observational skills and introduce basic biological differences among animals.
Learning outcomes
- Identify animals based on their ear shapes and sizes.
- Distinguish between animals with external and internal ears.
- Understand the relationship between visible ears and giving birth to young.
- Understand the relationship between hidden ears and laying eggs.
- Develop observational skills by studying animal features.
Topics covered
Paper topics
- Animal Ears
- Visible Ears
- Hidden Ears
- Animal Identification
- Reproduction in Animals
- Observation Skills
- Mammals
- Birds
- Reptiles
- Fish
- Insects
Important topics
- Identifying animals by their ears
- Distinguishing between external and internal ears
- The general rule: visible ears and live birth
- The general rule: hidden ears and egg-laying
PDF preview
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Questions and Solutions
प्रश्न 1
जानवर कान जानवर कान हाथी चूहा कुत्ता ............ खरगोश ........... भैंस ............ चूहा हिरन ...... जिराफ़
यह एक मजेदार मिलान वाला प्रश्न है जहाँ हमें चित्रों में दिए गए जानवरों के कानों को उनके सही मालिकों से जोड़ना है। चित्र बनाने वाले ने कानों को आपस में बदल दिया है। सही मिलान इस प्रकार है:
- हाथी के सिर पर चूहे के कान हैं।
- कुत्ते के सिर पर खरगोश के कान हैं।
- भैंस के सिर पर जिराफ़ के कान हैं।
- हिरन के सिर पर हाथी के कान हैं।
- चूहे के सिर पर भैंस के कान हैं।
- जिराफ़ के सिर पर कुत्ते के कान हैं।
यह अभ्यास हमें सिखाता है कि विभिन्न जानवरों के कान अलग-अलग आकार और प्रकार के होते हैं।
प्रश्न 1
जानवर: हिरन, मेंढ़क, मछली, चींटी, कौआ, चीता, चिड़िया, भैंस, साँप, छिपकली, सूअर, बत्तख, जिराफ़, हाथी, बिल्ली।
इस प्रश्न में हमें दिए गए जानवरों की सूची में से उन जानवरों को पहचानना है जिनके कान हम बाहर से देख सकते हैं और उन जानवरों को जिनके कान बाहर से दिखाई नहीं देते।
जानवर जिनके कान बाहर दिखाई देते हैं:
- हिरन
- चीता
- भैंस
- सूअर
- जिराफ़
- हाथी
- बिल्ली
जानवर जिनके कान बाहर दिखाई नहीं देते हैं:
- मेंढ़क (इनके कान सिर के दोनों ओर छोटे छेदों के रूप में होते हैं)
- मछली (इनके कान नहीं होते, ये पानी के कंपन से महसूस करती हैं)
- चींटी (इनके कान नहीं होते, ये कंपन से महसूस करती हैं)
- कौआ (इनके कान सिर के दोनों ओर छोटे छेदों के रूप में होते हैं)
- चिड़िया (इनके कान सिर के दोनों ओर छोटे छेदों के रूप में होते हैं)
- साँप (इनके कान नहीं होते, ये जमीन के कंपन से महसूस करते हैं)
- छिपकली (इनके कान सिर के दोनों ओर छोटे छेदों के रूप में होते हैं)
- बत्तख (इनके कान सिर के दोनों ओर छोटे छेदों के रूप में होते हैं)
यह अभ्यास हमें जानवरों की शारीरिक विशेषताओं में विविधता को समझने में मदद करता है।
प्रश्न 2
जिन जानवरों के कान हमें बाहर से दिखाई नहीं देते, उनके कान वास्तव में होते हैं, लेकिन वे सिर के अंदर या छोटे छेदों के रूप में छिपे होते हैं। उदाहरण के लिए, पक्षियों, साँपों और छिपकलियों के कान बाहर से दिखाई नहीं देते, लेकिन वे ध्वनि को महसूस करने के लिए अपने कानों का उपयोग करते हैं। ये कान अक्सर सिर पर छोटे छेदों के रूप में होते हैं जो पंखों या त्वचा से ढके हो सकते हैं।
Common mistakes
- Confusing the ears of different animals when matching.
- Incorrectly classifying animals based on ear visibility.
- Assuming animals without visible ears do not have ears at all.
Revision tips
- Review the images carefully to match ears to the correct animals.
- Create a personal list of animals with visible and hidden ears.
- Discuss with friends or family why some animals have external ears and others don't.
- Remember the general rule: visible ears often mean live birth, hidden ears often mean egg-laying.
Practice MCQs
Q1. Which of these animals has ears that are often confused with a mouse's ears in the exercise?
Explanation: The exercise shows that the elephant's large ears can be misplaced, and in the context of the provided solution, they are matched with a mouse's ear description.
Q2. According to the chapter's general rule, animals with ears that are visible on the outside usually:
Explanation: The chapter states a general observation that animals whose ears are visible on the outside typically give birth to live young.
Q3. Which of the following animals is listed as having ears that are NOT visible from the outside?
Explanation: The solution lists animals like snakes, lizards, and fish as having ears that are not visible externally.
Q4. If an animal has hidden ears, it is generally observed to:
Explanation: The chapter presents a general rule that animals with ears that cannot be seen from the outside often lay eggs.
Q5. In the ear-matching exercise, which animal's ears are listed as being matched with a giraffe?
Explanation: The provided solution indicates that the rabbit's ears are matched with the giraffe in the exercise.
Frequently asked questions
What is the main topic of Chapter 2, "Kan-Kan Mein"?
Chapter 2, "Kan-Kan Mein," focuses on the different types of ears found in animals and how they help us identify them. It also touches upon the general observation that animals with visible ears usually give birth to young, while those with hidden ears often lay eggs.
How do these NCERT solutions help students?
These solutions provide clear, rewritten answers to the chapter's exercises, helping students understand concepts like matching animal ears, identifying animals with visible vs. hidden ears, and the general rules associated with them. They aid in revision and exam preparation.
What is the general rule about animal ears and reproduction mentioned in the chapter?
The chapter suggests a general observation: animals whose ears are visible on the outside typically give birth to live young, whereas animals whose ears are not visible from the outside often lay eggs.
Are there any animals mentioned that do not have visible ears?
Yes, the chapter lists animals like fish, ants, snakes, and lizards as examples of creatures whose ears are not visible from the outside.
What kind of exercise is included in this chapter?
The chapter includes an exercise where students have to match the ears to the correct animals, as the ears have been mixed up in the illustrations. Another exercise involves classifying animals based on whether their ears are visible externally or not.
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