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