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Biology · STRUCTURAL ORGANISATION IN ANIMALS

हिन्दी

Regarding oviposition and development in Rana tigrina, how many ova are laid by a mature female at a time, and what type of development occurs?

  1. 250 to 300 ova; direct development without any intermediate larval stage.
  2. 10,000 to 12,000 ova; direct development with viviparity.
  3. 500 to 600 ova; internal development inside the dorsal dermal pouches.
  4. 2500 to 3000 ova; indirect development involving a tadpole larva that undergoes metamorphosis.

Correct answer · Option 4

2500 to 3000 ova; indirect development involving a tadpole larva that undergoes metamorphosis.

Explanation

A mature female frog lays 2500 to 3000 ova at a time. Fertilisation is external in water, and development involves a larval stage called tadpole which metamorphoses into adult.

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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