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Biology · STRUCTURAL ORGANISATION IN ANIMALS

हिन्दी

Consider the following statements regarding the respiratory modes in Rana tigrina: (A) Cutaneous respiration involves exchange of dissolved oxygen by diffusion. (B) Pulmonary respiration involves a pair of elongated, pink coloured sac-like lungs located in the thorax. (C) During aestivation, the frog respires using buccal cavity and lungs. (D) On land, skin, buccal cavity, and lungs act as respiratory organs. Which of the above statements are correct?

  1. (A), (C) and (D) only
  2. (A), (B) and (D) only
  3. (B) and (C) only
  4. (C) and (D) only

Correct answer · Option 2

(A), (B) and (D) only

Explanation

Statements (A), (B), and (D) are correct. Statement (C) is incorrect because during aestivation and hibernation, gaseous exchange occurs solely through the skin.

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