Which of the following cell organelle is present ONLY in animal cells but not in plant cells?
Which of the following cell organelle is present ONLY in animal cells but not in plant cells?
निम्नलिखित में से कौन-सा कोशिकांग केवल जंतु कोशिकाओं में उपस्थित होता है, किंतु पादप कोशिकाओं में नहीं?
Detailed Solution & Logic
Centrosome/ सेंट्रोसोम
Explanation / व्याख्या
Centrosome / सेंट्रोसोम
It consists of two centrioles and is the main microtubule organizing center in animal cells.
इसमें दो सेंट्रिओल्स होती हैं और यह जंतु कोशिकाओं में मुख्य सूक्ष्मनलिका संगठन केंद्र होता है।Plays a key role in mitosis (cell division) by forming the spindle fibers.
यह माइटोसिस (कोशिका विभाजन) में महत्वपूर्ण भूमिका निभाता है और स्पिंडल फाइबर्स का निर्माण करता है।Plant cells usually lack centrioles; they organize microtubules differently.
पादप कोशिकाओं में सामान्यतः सेंट्रिओल नहीं होते; वे सूक्ष्मनलिकाओं को अलग तरीके से व्यवस्थित करती हैं।
Why others are not correct / अन्य क्यों सही नहीं हैं:
Mitochondria / माइटोकॉन्ड्रिया – Present in both plant and animal cells.
Vacuole / वेक्यूओल – Present in both, but size differs (large in plants, small in animals).
Golgi apparatus / गोल्जी उपकरण – Present in both for protein and lipid transport.
Extra Facts / अतिरिक्त तथ्य:
Centrosomes help in forming cilia and flagella in some animal cells.
कुछ जंतु कोशिकाओं में सेंट्रोसोम सिलिया और फ्लैजेला बनाने में मदद करता है।In plants, the microtubule organizing center (MTOC) performs a similar role but without centrioles.
पादपों में, सूक्ष्मनलिका संगठन केंद्र (MTOC) यही कार्य करता है, लेकिन सेंट्रिओल्स के बिना।
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