The Invisible Living World: Beyond Our Naked Eye
CBSE · Class 8 · Science
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What is a cell?
Answer
A cell is the basic unit of life. All living beings are made of cells, and cells form the body of plants, animals, and microorganisms.
कोशिका क्या है?
Answer
कोशिका जीवन की मूल इकाई है। सभी जीव कोशिका से बने हैं और कोशिका से ही पेड़, जानवर और सूक्ष्मजीवों का शरीर बनता है।…
Why did Robert Hooke name small spaces in cork cells?
Answer
He observed a thin slice of cork under a microscope and saw many small empty spaces like a honeycomb. He called each space a cell.
रॉबर्ट हुक ने कॉर्क कोशिकाओं में छोटी जगहों का नाम क्यों रखा?
Answer
उसने सूक्ष्मदर्शी के नीचे कॉर्क के एक पतले टुकड़े को देखा और मधुकोश की तरह कई छोटे खाली स्थान देखे। उसने प्रत्येक स्थान को एक कोशिका कहा।…
What did Robert Hooke’s microscope do?
Answer
It magnified objects 200 to 300 times more than the unaided eye, helping him see tiny structures clearly.
रॉबर्ट हुक के सूक्ष्मदर्शी ने क्या किया?
Answer
इसने वस्तुओं को नग्न आंखों की तुलना में 200 से 300 गुना अधिक बड़ा कर दिया, जिससे उन्हें छोटी संरचनाओं को स्पष्ट रूप से देखने में मदद मिली।…
Who was Antonie van Leeuwenhoek known as?
Answer
He is known as the Father of Microbiology because he was the first person to clearly see and describe tiny living things like bacteria and blood cells.
एंटनी वैन लीउवेनहोएक को किस नाम से जाना जाता था?
Answer
उन्हें सूक्ष्म जीव विज्ञान के जनक के रूप में जाना जाता है क्योंकि वे पहले व्यक्ति थे जिन्होंने बैक्टीरिया और रक्त कोशिकाओं जैसी छोटी जीवित चीजों को स्पष्ट रूप से देखा और उनका वर्णन किया।…
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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