Question

14. Compare the difference between the frog's overall body size and the size of its small intestine. Why is the small intestine so long? 15. List two major similarities between amphibians and humans. 16. List two major differences between amphibians and humans.

Answer 1

ANS 14. A frog's small intestine is about twice its body length.

• Most tadpoles eat algae and plants
• They need long small intestines so the fibrous material has more time to digest and be absorbed.
• You can see their coiled intestines through their translucent skin.
• Their intestinal length is about ten times their body length.

Frog overall body

• Depending on their size, frogs eat insects, worms, small snakes, and mice.
• Their diet is mostly protein, which is much easier to digest than fibre.
• Adult frogs can therefore have a shorter small intestine. It is only about twice their body length

Digestive System of a Frog Esophagus Stomach Tongue Gallbladder Liver Cloaca Small Intestine Pancreas Large Intestine

ANS 15. Similaritis between amphibians and humans

Frog (Amphibians) eu Human - Humans when exposed to similarity frogs, whe to hot water, we 1 They are exposed to would be susprised | hot water, the will beo and immedietly remove redietly remove susprised and immedietly The affected timbe Jumped to save Themselves of our water.we, from contact with hot will fill cozy and boot water. earlier. comportable However, when They are in- cold water. They will feel comfortable and Continue to Sub morze themselver. @ Mormal people. are o similanty, The frog. born with a pairy Jumping is an activity for all leg. with a paira all adult frog. Mot all wall animals in this legri the man can walks, world have the lede to rún, and jump. Human rump equation with prog.is Jumping n

ANS 16. Differences between amphibians and humans

• Humans are warm-blooded, amphibians cold-blooded.
• Frog hearts have three chambers, human hearts have four. Also, the electric currents that flow in the muscle cells of frog hearts have different features to those that flow in human hearts.
• The central nervous system of the frog is different from that of humans; if the optic nerve of a frog is cut, the animal will be able to see again within weeks but the same damage in humans would cause permanent blindness.
• Amphibians metabolise antibiotics differently from humans.
• Amphibians are less sensitive to certain toxins than humans are.