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