Glass Frogs and Their Unique Adaptations

Glass frogs use a unique camouflage technique to avoid predators by sleeping on leaves that match their back color. They hide their blood by sending most red blood cells to their liver, which reflects light using guanine, making the liver appear like a mirror. This adaptation allows them to remain hidden while resting. Once they wake, the blood returns to their bloodstream, and they resume normal activities.

How do glass frogs camouflage themselves during the day?

• By sleeping on leaves that match their back color

• By covering themselves with mud

• By hiding under rocks

• By changing their skin color to match the surroundings

What part of the glass frog's body cannot become transparent?

• Their eyes

• Their skin

• Their blood

• Their bones

Where do glass frogs send most of their red blood cells while sleeping?

• To their heart

• To their brain

• To their lungs

• To their liver

What material in the liver helps glass frogs hide their blood?

• Guanine

• Keratin

• Melanin

• Chlorophyll

What happens to the blood of glass frogs once they start moving?

• It evaporates

• It moves back into the bloodstream

• It is expelled from the body

• It stays in the liver

What is the primary benefit of the glass frog's blood management strategy?

• To enhance their vision

• To increase their speed

• To improve their digestion

• To avoid detection by predators