CBSE Class 5 EVS Chapter 5: बीज,बीज,बीज (Seeds, Seeds, Seeds) NCERT Solutions
This chapter, "बीज,बीज,बीज" (Seeds, Seeds, Seeds), for CBSE Class 5 Environmental Studies, delves into the fascinating world of seeds. Students will explore the process of soaking various food items before cooking, understanding why it's necessary for items like chickpeas and rajma to soften and cook faster. The solutions also guide students through the practical steps of sprouting seeds like moong and chana, detailing the soaking, wrapping in a damp cloth, and the time required for germination. A key experiment is explained, comparing seed germination under different conditions (water only, water and air, air only) to understand the essential requirements for sprouting. The chapter further investigates plant growth from seeds, encouraging students to sow different types of seeds and observe their development over several days, noting changes in height, leaf count, and stem thickness. This chapter helps students understand the life cycle of plants starting from seeds and the factors influencing their growth, making it an excellent resource for exam revision.
Quick info
| Board | CBSE |
|---|---|
| Class | Class 5 |
| Subject | Environmental Studies |
| Session | 2026 |
| Language | Hindi |
| Type | NCERT Solutions |
| Chapter | 5 बीज ,बीज ,बीज |
Chapter summary
Chapter 5, "बीज,बीज,बीज" (Seeds, Seeds, Seeds), for Class 5 EVS focuses on seed germination and plant growth. It covers practical aspects like soaking food grains, the process and benefits of sprouting, and an experiment to identify the conditions necessary for germination (water and air). Students also learn to observe and record plant growth from different seeds over time, understanding factors affecting germination and growth. These NCERT solutions provide clear explanations and step-by-step guidance for all activities and questions in the chapter.
Learning outcomes
- Understand the reasons for soaking food items before cooking.
- Learn the process and benefits of sprouting seeds.
- Identify the essential conditions required for seed germination.
- Observe and record the growth of plants from different seeds.
- Compare the growth rates of different types of seeds.
- Understand the factors that can affect plant growth.
Topics covered
Paper topics
- Soaking food grains
- Sprouting seeds
- Process of germination
- Conditions for germination (water, air)
- Plant growth experiment
- Observation of plant development
- Factors affecting plant growth
- Seed types and their growth rates
- Importance of seeds
- Nutritional value of sprouts
Important topics
- Conditions for seed germination
- Process of sprouting
- Observing and recording plant growth
- Reasons for soaking food
PDF preview
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Questions and Solutions
चर्चा करो (पृष्ठ 42)
चर्चा करो (पृष्ठ 42)
चर्चा करो (पृष्ठ 42)
करके देखो (पृष्ठ 43)
कटोरी 1 (पानी से भरी हुई): इस कटोरी के बीज फूल गए हैं और थोड़े बड़े हो गए हैं, लेकिन वे काले पड़ गए हैं। ऐसा इसलिए हुआ क्योंकि उन्हें पानी तो मिला लेकिन हवा नहीं मिली, जिससे वे सड़ने लगे।
कटोरी 2 (गीले कपड़े/रूई में लिपटे हुए): इस कटोरी के बीज फूलकर बड़े हो गए हैं और उनमें से छोटे-छोटे अंकुर (जड़ें और तने) निकल आए हैं। इन बीजों को पानी और हवा दोनों मिले, जो अंकुरण के लिए आवश्यक हैं।
कटोरी 3 (सूखे चने): इस कटोरी के चनों में कोई खास बदलाव नहीं आया है। वे वैसे के वैसे ही हैं क्योंकि उन्हें न तो पानी मिला और न ही वे अंकुरित हुए।
तालिका के रूप में बदलाव:
| कटोरी 1 | कटोरी 2 | कटोरी 3 | |
| क्या बीजों को हवा मिल रही है? | नहीं | हाँ | हाँ |
| क्या बीजों को पानी मिल रहा है? | हाँ | हाँ | नहीं |
| बीजों में क्या बदलाव आया? | बीज काले पड़ गये और फूल गये | बीज फूल कर बड़े हो गये और अंकुर निकल आये | कोई बदलाव नहीं |
| क्या बीजों में अंकुरण हुआ? | नहीं | हाँ | नहीं |
बताओ और लिखो (पृष्ठ 43)
बताओ और लिखो (पृष्ठ 43)
बताओ और लिखो (पृष्ठ 43)
बताओ और लिखो (पृष्ठ 43)
चित्र में, आप देखेंगे कि बीज से एक पतली जड़ नीचे की ओर निकल रही है और एक छोटा अंकुर ऊपर की ओर बढ़ रहा है। यह अंकुरित बीज का प्रारंभिक रूप है।
किसका पौधा कितना बड़ा? (पृष्ठ 44)
लिखो (पृष्ठ 44)
उदाहरण के लिए, यदि सरसों का बीज 5 नवंबर को बोया गया था, तो तालिका इस प्रकार भरी जा सकती है:
| बीज का नाम | बोने की तिथि | तारीख | पौधे की लम्बाई (से.मी.) | कितने पत्ते दिखे | कोई और बदलाव |
| सरसों | 5 नवम्बर | 5 नवम्बर | ½ से.मी. | 0 | नहीं |
| सरसों | 5 नवम्बर | 6 नवम्बर | 2 से.मी. | 2 | नहीं |
| सरसों | 5 नवम्बर | 7 नवम्बर | 2½ से.मी. | 3 | तना मोटा हो गया |
| सरसों | 5 नवम्बर | 8 नवम्बर | 4 से.मी. | 4 | तना और भी मोटा हो गया |
पता करो (पृष्ठ 45)
पता करो (पृष्ठ 45)
पता करो (पृष्ठ 45)
पता करो (पृष्ठ 45)
पता करो (पृष्ठ 45)
चर्चा करो (पृष्ठ 45)
चर्चा करो (पृष्ठ 45)
चर्चा करो (पृष्ठ 45)
चर्चा करो (पृष्ठ 45)
चर्चा करो (पृष्ठ 45)
दिल की बात बताओ (पृष्ठ 45)
दिल की बात बताओ (पृष्ठ 45)
Common mistakes
- Not providing adequate water or air for germination.
- Overwatering or underwatering seeds during the growth experiment.
- Incorrectly observing or recording plant growth data.
- Assuming seeds will sprout without the necessary environmental conditions.
Revision tips
- Review the experiment on seed germination to understand the roles of water and air.
- Practice explaining the process of sprouting and its importance.
- Revisit the plant growth observation table and discuss the differences in growth rates.
- Draw and label diagrams of germinating seeds and young plants.
Practice MCQs
Q1. Which of the following food items is typically soaked before cooking because its grains are very hard?
Explanation: Chickpeas (Chana) and similar pulses are very hard and require soaking to soften them, reducing cooking time.
Q2. What are the essential conditions required for a seed to sprout, as demonstrated in the experiment?
Explanation: The experiment shows that seeds sprout when provided with both water and air. Water alone or air alone is not sufficient for germination.
Q3. In the experiment, why did the seeds in the first bowl (filled with water) not sprout?
Explanation: The seeds in the first bowl were completely submerged in water, preventing them from receiving the necessary air for germination.
Q4. Which of the following seeds is mentioned as sprouting the fastest in the experiment?
Explanation: The text indicates that mustard seeds (Sarson) sprouted the quickest, emerging from the soil in the fewest days.
Q5. Why is it important to keep the cloth or cotton moist when sprouting seeds?
Explanation: The moist cloth or cotton provides the necessary water that the seeds need to absorb for the germination process to begin.
Frequently asked questions
What is the main purpose of soaking food items like chana and rajma before cooking?
Soaking makes these food items softer, reducing the cooking time significantly and making them easier to digest.
What are the essential requirements for seeds to germinate?
Seeds require both water and air to germinate. Water helps the seed swell and activate its internal processes, while air is necessary for respiration.
How can one sprout seeds at home?
Soak the seeds overnight, drain the water, and tie them in a damp cloth or place them in a bowl with moist cotton. Keep them in a warm place for a day or two until sprouts appear.
Why is it important to observe plant growth from seeds?
Observing plant growth helps understand the life cycle of plants, the time it takes for different seeds to grow, and the factors that influence their development, such as water and air.
What happens if a plant does not get enough water?
If a plant does not receive enough water, it will start to turn yellow, wilt, and eventually dry up and die.
What is inside a seed?
Inside a seed, there is a tiny, dormant plant embryo along with stored food, waiting for the right conditions to grow.
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