Q5. Assertion: the frog’s alimentary canal is short. Reason: frogs are carnivores. Are both true, and does the reason explain the assertion?
Both are true, and the reason explains the assertion (NCERT page 81).
Q6. What is the mesorchium?
The double fold of peritoneum that attaches the testes to the upper part of the kidneys (NCERT page 83).
Q7. Which sense organs of the frog are well-organised structures?
The eyes and the internal ears (NCERT page 83).
Q8. Through which organ does gaseous exchange take place during aestivation and hibernation?
The skin (NCERT page 82).
Q9. Into which canal do the vasa efferentia open?
Bidder’s canal, which joins the urinogenital duct (NCERT pages 83–84).
Q10. What is the larval stage of the frog called, and how does it become an adult?
The tadpole; it undergoes metamorphosis (NCERT page 84).