Chapter 19 Amphibians

How do salamanders reproduce?

• External fertilization using a sac of sperm called a spermatophore

• Internal fertilization using a sac of sperm called a spermatophore

• Reciprocal sperm transfer

• Kissing

Mudpuppies exhibit obligate paedomorphosis

• True

• False

Answer explanation

Axolotls exhibit facultative paedomorphosis

Male _____ have a copulatory organ

• Salamanders

• Frogs

• toads

• caecilians

Where do anurans (frogs & toads) store water?

• Kidneys and liver

• Skin and muscles

• Lymph sacs and urinary bladder

• Brain & spleen

The mating position of a male amphibian on top of a female amphibian. The male squeezes eggs out of the female by wrapping his forelimbs around her while he releases sperm.

• Internal fertilization

• Parthenogenesis

• Amplexus

• reciprocal sperm transfer

Which amphibians have a retractile tentacle between the eyes & nostrils used to survey their surroundings

• Frogs and toads

• Salamanders

• Caecilians

• Axolotls

_______ & ______ make up the wood frog antifreeze that allow it to survive freezing winter conditions

• feces & urine

• blood & plasma

• sweat & mucus

• urine & glucose

_______ has attributed to the global decline of amphibians

• Mold

• Chytrid fungus

• Mosquitoes

• black fly larvae

Frogs are amniotes

• True

• False

Answer explanation

Birds, lizards, rodents, and humans are all considered amniotes