Activity 7: Frog / Toad External AnatomyPost-Lab Discussion

hump

instep

ANSWERS TO GUIDE QUESTIONS:

1. How would you explain, histologically, the slippery skin

of the frog? Compare the toad’s skin with the frog’s/toad’s skin.

• Frog’s slippery skin is due to the presence of numerous mucous glands.

• Toad’s skin is more coarse dorsally.

1. How would you explain, histologically, the slippery skin

of the frog? Compare the toad’s skin with the frog’s/toad’s skin.

• Frog’s slippery skin is due to the presence of numerous mucous glands.

• Toad’s skin is more coarse dorsally.

2. Of what significance is the difference in color of the dorsal

and ventral surfaces of the body?

The dorsal body surface is warty and darker in color.

The ventral surface is smooth and lighter in color.

For camouflage…

2. Of what significance is the difference in color of the dorsal

and ventral surfaces of the body?

The dorsal body surface is warty and darker in color.

The ventral surface is smooth and lighter in color.

For camouflage…

ANSWERS TO GUIDE QUESTIONS:

3. What is the function of the parotid gland?

The parotid gland is a poison gland that helps to protect a species from extinction

secondary to predation.

3. What is the function of the parotid gland?

The parotid gland is a poison gland that helps to protect a species from extinction

secondary to predation.

ANSWERS TO GUIDE QUESTIONS:

4. What is the sex of your specimen based on its external features? Why do you say so?

Male?

Female?

We’ll know for sure when we get to Activity 13.

4. What is the sex of your specimen based on its external features? Why do you say so?

Male?

Female?

We’ll know for sure when we get to Activity 13.

ANSWERS TO GUIDE QUESTIONS:

I’m really lovely… Underneath it all.

fin....fin....