How to Identify and Classify Iguanas
  • 1. What is the primary characteristic used to initially identify an iguana?
A) Length of tail
B) Shape of head
C) Presence of dewlap and dorsal spines
D) Color of scales
  • 2. What is a dewlap?
A) A flap of skin under the iguana's chin
B) A type of claw
C) A bony plate on the head
D) A scale pattern on the back
  • 3. What is the purpose of the dorsal spines on an iguana?
A) Thermoregulation
B) Water storage
C) Camouflage
D) Display and defense
  • 4. Which of these is a common iguana species?
A) Green Iguana (Iguana iguana)
B) Chameleon (Chamaeleonidae)
C) Komodo Dragon (Varanus komodoensis)
D) Bearded Dragon (Pogona vitticeps)
  • 5. Where are Green Iguanas primarily found?
A) Europe
B) Central and South America
C) Australia
D) Africa
  • 6. What is a key characteristic to differentiate between male and female Green Iguanas?
A) Males have shorter tails
B) Larger dewlap and femoral pores in males
C) Color of scales is brighter in females
D) Females have larger dorsal spines
  • 7. What are femoral pores used for?
A) Breathing
B) Scent marking and communication
C) Grasping branches
D) Hearing
  • 8. Which of the following best describes an iguana's diet?
A) Insectivorous (primarily insects)
B) Herbivorous (primarily plant-based)
C) Omnivorous (both plants and meat)
D) Carnivorous (primarily meat-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) 20-30 years
C) 5-10 years
D) 10-20 years
  • 11. What behavior do iguanas exhibit to regulate their body temperature?
A) Burrowing underground
B) Shedding their skin rapidly
C) Swimming in cold water
D) Basking in the sun
  • 12. What physical feature helps iguanas climb?
A) Sharp claws on their toes
B) Webbed feet
C) Prehensile tail
D) Suction cups on their 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 only found on islands
B) Green Iguanas are larger than Rock Iguanas
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) Data Deficient
C) Endangered
D) Near Threatened
  • 17. What is the scientific name for the Blue Iguana?
A) Cyclura lewisi
B) Iguana delicatissima
C) Amblyrhynchus cristatus
D) Brachylophus vitiensis
  • 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) Soft-shelled eggs
C) Leathery-shelled eggs
D) Hard-shelled eggs
  • 20. What is the typical clutch size for a Green Iguana?
A) 10-20 eggs
B) 20-70 eggs
C) 1-5 eggs
D) 5-10 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) Brown
B) Black
C) Green
D) Red
  • 24. Where are Marine Iguanas found?
A) Galapagos Islands
B) The Bahamas
C) Hawaii
D) Fiji
  • 25. What adaptation allows Marine Iguanas to forage in the ocean?
A) Gills
B) Webbed feet
C) Streamlined body shape
D) Ability to hold their breath for extended periods
  • 26. What is the function of the salt glands in Marine Iguanas?
A) To aid in digestion
B) To produce venom
C) To attract mates
D) To excrete excess salt from seawater
  • 27. What is a characteristic feature of Fijian crested iguanas?
A) Lack of a dewlap
B) Bright blue coloration
C) Fully aquatic lifestyle
D) Prominent crest of spines along their back
  • 28. What type of habitat do Fijian crested iguanas inhabit?
A) Dry forests
B) Mangrove swamps
C) Rainforests
D) Deserts
  • 29. What is a defining characteristic of desert iguanas?
A) Excellent swimming ability
B) Nocturnal behavior
C) Cold tolerance
D) Heat tolerance
  • 30. What type of vegetation do desert iguanas often consume?
A) Moss
B) Seaweed
C) Creosote bush
D) Orchids
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