थंडीच्या दिवसांत तुम्हांला घरात पाल दिसत नाही हे तुमच्या निदर्शनास आले आहे का? त्या कुठे जातात असतील असे तुम्हांला वाटते?

  1. उत्परिवर्तनासाठी 
  2. शीतनिष्क्रियतेसाठी 
  3. पुनर्जननासाठी 
  4. ग्रीष्मनिष्क्रियतेसाठी 

Answer (Detailed Solution Below)

Option 2 : शीतनिष्क्रियतेसाठी 
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स्पष्टीकरण:

  • शीतनिष्क्रीयता  म्हणजे हिवाळ्यात शीतरक्ती प्राण्यांसाठी सुप्तावस्थेचा काळ असतो.
  •  पाली, बेडूक यांच्यासारखे शीतरक्ती प्राणी हिवाळ्यात थंड तापमानापासून स्वतःचा बचाव करण्यासाठी सुप्तावस्थेत जातात.
  • ग्रीष्मनिष्क्रियता म्हणजे उन्हाळ्यातील उष्ण तापमानाचा सामना करण्यासाठी काही प्राणी उन्हाळ्यात 
  •  
  • Aestivation is defined as the slowing down of activity during the summer by some animals in order to cope with high temperatures.
  • Regeneration is defined as the growth of new tissue from a destroyed one.
  • The alteration in the genetic material tends to change the characteristics of an organism is called Mutation.
  • Hibernation is defined as a state of reduced metabolic activity during winter season among some animals.
  • Many organisms are hibernators such as Fishes, Amphibians and Reptiles.
  • Snakes, Frogs and Lizards hibernate in cold weather because they are cold-blooded animals.
  • The Hibernators relies on a combination of reserve body fat, stored food supplies etc.
  • Some animals become dormant in the summer season which is called Aestivation.
  •  

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-> Commission has released the new Scheme & Syllabus for WBCS Exam 2025. The topics and exam pattern for prelims and mains is mentioned in the detailed syllabus.

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