OnlineCBT Logo OnlineCBT
⚲
English
OnlineCBT Logo OnlineCBT
⚲

Biology · STRUCTURAL ORGANISATION IN ANIMALS

हिन्दी

In Rana tigrina, which organ(s) execute respiratory exchange during periods of aestivation and hibernation?

  1. Buccal cavity and lungs exclusively.
  2. Skin exclusively by cutaneous gas exchange.
  3. Lungs, supported by external gills.
  4. Buccopharyngeal cavity and cloacal sacs in equal proportions.

Correct answer · Option 2

Skin exclusively by cutaneous gas exchange.

Explanation

During aestivation and hibernation, gaseous exchange in frogs takes place exclusively through the moist skin (cutaneous respiration).

Related questions

Match List-I with List-II regarding the reproductive and excretory structures in male and female frogs: List-I List-II A Mesorchium I Transfers sperms from testis into kidneys (10-12 in number) B Vasa efferentia II Canal inside kidney that receives vasa efferentia C Bidder’s canal III Double fold of peritoneum attaching testes to kidneys D Oviduct IV Opens separately into the cloaca without connecting to kidneys Choose the correct answer from the options given below:→Which statement accurately describes the anatomical location and opening of the urinary bladder in frogs?→Given below are two statements: Statement I: Frogs never drink water directly but absorb it through the skin. Statement II: The skin of a frog is always maintained dry to prevent loss of body salts. In the light of the above statements, choose the most appropriate answer from the options given below:→Consider the following statements regarding the vascular and respiratory systems of frog: (A) The lymph in frog lacks few proteins and erythrocytes (RBCs). (B) A special venous connection between the kidney and lower parts of the body is called the renal portal system. (C) During aestivation and hibernation, frog respires mainly by lungs. (D) RBCs of frog are enucleated and biconcave like mammalian RBCs. Which of the above statements are correct?→
ऑनलाइन कंप्यूटर आधारित परीक्षा

हमारा मिशन है – "विद्यार्थियों को शिक्षित करना और उन्हें प्रतिस्पर्धी परीक्षाओं की तैयारी में उनकी पूर्ण क्षमता के साथ उत्कृष्टता प्राप्त करने में सहायता करना। साथ ही उनमें अच्छे संस्कारों का संचार करना और उनके व्यक्तित्व का विकास करना।"

उपयोगी लिंक
महत्वपूर्ण पेज
कोर्सेज और अभ्यास
संपर्क करें
पता

प्लॉट नं. 10, धोलीगुमटी, पंडितपुरा रोड, बंदीकुई, दौसा (राजस्थान) – 303313

संपर्क करें

+91 7877547686

 ई-मेल

onlinecbtportal@gmail.com

 हेल्पलाइन नंबर

+91 7877547686
साझा करें
डाउनलोड करने के लिए क्लिक करें
Get it on Google Play

ऐप डाउनलोड करने
के लिए Google Play पर
उपलब्ध है

उपयोग की शर्तें | गोपनीयता नीति | कुकी नीति | अस्वीकरण | संपादकीय नीति | तथ्य जांच | सुधार | DMCA | विज्ञापन विकल्प

Copyright © 2026 - OnlineCBT.in. All Rights Reserved.

WhatsApp Chat