Page 64 - Primary Six Notes

How amphibians respire.

 A frog breathes through its moist skin and mouth cavity in
water and lungs for breathing on land.

 A frog keeps its skin moist by secretions from the mucus
glands.

 A toad also uses lungs and mouth cavity for breathing.

 Amphibians do not have diaphragms and ribs.

 A tadpole uses external gills for breathing.

Movement

 The hind limbs of amphibians are used for crawling and

leaping.

 The front legs of amphibians are used for absorbing pres-

sure of the shock of landing.

Feeding

 Adult frogs and toads are carnivorous as they feed on

worms, beetles, cockroaches, houseflies and other insects.

 Sometimes toads and frogs leap towards an insect and trap
it using their sticky tongues.

 A tadpole is herbivorous and feeds on plants in water.

Toads and frogs hibernate, a state when the body activities are

slowed down e.g feeding. This is also called Aestivation.