Instructions
Read the descriptions of the gecko's unique anatomical features below. Match each description to the correct term from the Word Bank. Write the letter of the correct term in the space provided.
Word Bank
- A. Spectacle
- B. Lamellae
- C. Tympanic Membrane
- D. Autotomy
- E. Jacobson's Organ
- F. Dorsal Tubercles
- G. Prehensile Tail
- H. Cloaca
Anatomy Descriptions
- This special organ is located in the roof of the gecko's mouth. The gecko flicks its tongue to pick up scent particles from the air and presses them to this organ, essentially "tasting" its surroundings.
- Instead of eyelids, geckos have this transparent, fixed scale covering each eye for protection. You'll often see them licking this scale to keep it clean and moist.
- This is the gecko's external eardrum, visible as a small circular depression on the side of its head behind the jaw. It picks up sound vibrations from the environment.
- Found on the underside of a gecko's toes, these are millions of microscopic, hair-like structures that create a molecular bond with surfaces, allowing the gecko to climb smooth vertical walls.
- This term describes the remarkable ability of a gecko to voluntarily detach its tail as a defense mechanism to escape a predator. The detached tail will continue to wiggle, distracting the attacker.
- This is a single posterior opening that serves as the exit for the digestive, urinary, and reproductive tracts in reptiles.
- While not all geckos have this feature, many species possess a tail that can grip and hold onto branches, acting like a fifth limb for stability and climbing.
- These are the small, raised, bump-like scales found along the gecko's back and sides. They can vary in size and shape, providing texture and aiding in camouflage.
Challenge Question
Geckos store fat in their tails as an energy reserve. Considering this fact and the concept of tail autotomy, why might a gecko be hesitant to drop its tail unless absolutely necessary?
Answer Key
Matching Answers
- E - Jacobson's Organ
- A - Spectacle
- C - Tympanic Membrane
- B - Lamellae
- D - Autotomy
- H - Cloaca
- G - Prehensile Tail
- F - Dorsal Tubercles
Challenge Question Answer
Example Answer: A gecko would be hesitant to drop its tail because it would lose a significant and vital store of fat. This fat is an energy reserve that helps the gecko survive during periods when food is scarce. Losing its tail means losing its emergency food supply, which could put its survival at risk. Additionally, regrowing the tail requires a great deal of energy that could otherwise be used for growth or reproduction.