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How to Identify and Classify Iguanas
Contributed by: Wallis
  • 1. What is the primary characteristic used to initially identify an iguana?
A) Length of tail
B) Presence of dewlap and dorsal spines
C) Shape of head
D) Color of scales
  • 2. What is a dewlap?
A) A bony plate on the head
B) A type of claw
C) A flap of skin under the iguana's chin
D) A scale pattern on the back
  • 3. What is the purpose of the dorsal spines on an iguana?
A) Display and defense
B) Thermoregulation
C) Water storage
D) Camouflage
  • 4. Which of these is a common iguana species?
A) Komodo Dragon (Varanus komodoensis)
B) Bearded Dragon (Pogona vitticeps)
C) Chameleon (Chamaeleonidae)
D) Green Iguana (Iguana iguana)
  • 5. Where are Green Iguanas primarily found?
A) Australia
B) Africa
C) Europe
D) Central and South America
  • 6. What is a key characteristic to differentiate between male and female Green Iguanas?
A) Larger dewlap and femoral pores in males
B) Males have shorter tails
C) Color of scales is brighter in females
D) Females have larger dorsal spines
  • 7. What are femoral pores used for?
A) Scent marking and communication
B) Grasping branches
C) Breathing
D) Hearing
  • 8. Which of the following best describes an iguana's diet?
A) Carnivorous (primarily meat-based)
B) Omnivorous (both plants and meat)
C) Insectivorous (primarily insects)
D) Herbivorous (primarily plant-based)
  • 9. What is a common defense mechanism used by iguanas?
A) Spitting venom
B) Tail autotomy (shedding the tail)
C) Playing dead
D) Camouflaging into the background
  • 10. What is the typical lifespan of a Green Iguana in captivity?
A) 1-5 years
B) 5-10 years
C) 10-20 years
D) 20-30 years
  • 11. What behavior do iguanas exhibit to regulate their body temperature?
A) Basking in the sun
B) Swimming in cold water
C) Shedding their skin rapidly
D) Burrowing underground
  • 12. What physical feature helps iguanas climb?
A) Webbed feet
B) Sharp claws on their toes
C) Suction cups on their feet
D) Prehensile tail
  • 13. Why is proper UVB lighting important for iguanas in captivity?
A) Skin coloration
B) Proper digestion
C) Temperature regulation
D) Vitamin D3 synthesis for calcium absorption
  • 14. What is a key difference between Green Iguanas and Rock Iguanas?
A) Green Iguanas are larger than Rock Iguanas
B) Rock Iguanas are always green
C) Green Iguanas are only found on islands
D) Rock Iguanas have a more robust build and spiny scales
  • 15. Where are Rock Iguanas primarily found?
A) Caribbean Islands
B) Australia
C) Southeast Asia
D) Madagascar
  • 16. Which conservation status do some species of Rock Iguanas have?
A) Data Deficient
B) Least Concern
C) Endangered
D) Near Threatened
  • 17. What is the scientific name for the Blue Iguana?
A) Iguana delicatissima
B) Cyclura lewisi
C) Brachylophus vitiensis
D) Amblyrhynchus cristatus
  • 18. What is the primary threat to wild iguana populations?
A) Climate change
B) Natural disasters
C) Lack of food sources
D) Habitat loss and invasive species
  • 19. What type of eggs do iguanas lay?
A) Soft-shelled eggs
B) Hard-shelled eggs
C) Leathery-shelled eggs
D) Gelatinous eggs
  • 20. What is the typical clutch size for a Green Iguana?
A) 5-10 eggs
B) 10-20 eggs
C) 20-70 eggs
D) 1-5 eggs
  • 21. What environmental factor influences the sex of baby iguanas?
A) Food availability
B) Light exposure
C) Humidity
D) Temperature
  • 22. What does it mean if an iguana is displaying its dewlap?
A) Displaying dominance or attracting a mate
B) Regulating body temperature
C) Indicating fear
D) Signaling for food
  • 23. What is the primary scale color of the marine iguana?
A) Green
B) Black
C) Red
D) Brown
  • 24. Where are Marine Iguanas found?
A) Hawaii
B) Fiji
C) Galapagos Islands
D) The Bahamas
  • 25. What adaptation allows Marine Iguanas to forage in the ocean?
A) Gills
B) Streamlined body shape
C) Ability to hold their breath for extended periods
D) Webbed feet
  • 26. What is the function of the salt glands in Marine Iguanas?
A) To attract mates
B) To produce venom
C) To aid in digestion
D) To excrete excess salt from seawater
  • 27. What is a characteristic feature of Fijian crested iguanas?
A) Fully aquatic lifestyle
B) Prominent crest of spines along their back
C) Bright blue coloration
D) Lack of a dewlap
  • 28. What type of habitat do Fijian crested iguanas inhabit?
A) Mangrove swamps
B) Deserts
C) Rainforests
D) Dry forests
  • 29. What is a defining characteristic of desert iguanas?
A) Nocturnal behavior
B) Cold tolerance
C) Excellent swimming ability
D) Heat tolerance
  • 30. What type of vegetation do desert iguanas often consume?
A) Seaweed
B) Moss
C) Orchids
D) Creosote bush
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