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