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How to Identify and Classify Mangrove Trees - Quiz
Contributed by: Crossley
  • 1. What is the primary habitat of mangrove trees?
A) Deserts
B) High altitude mountains
C) Freshwater lakes
D) Coastal intertidal zones
  • 2. Which adaptation is most common in mangrove trees for surviving in saline environments?
A) Needle-like leaves to conserve water
B) Extensive root systems in freshwater
C) Thick bark for insulation
D) Salt excretion through leaves
  • 3. What type of root system is characteristic of red mangroves?
A) Fibrous roots
B) Prop roots
C) Aerial roots, but not prop roots
D) Tap roots
  • 4. Black mangroves typically excrete salt through:
A) Salt glands in leaves
B) Bark
C) Fruit
D) Roots
  • 5. Pneumatophores are characteristic of which type of mangrove?
A) Buttonwood mangroves
B) White mangroves
C) Black mangroves
D) Red mangroves
  • 6. White mangroves are often found:
A) Seaward of red and black mangroves
B) Landward of red and black mangroves
C) On steep slopes
D) Exclusively in freshwater areas
  • 7. Which leaf shape is most commonly associated with red mangroves?
A) Elliptical
B) Needle-like
C) Heart-shaped
D) Rounded
  • 8. The propagules of red mangroves are:
A) Berries
B) Winged seeds
C) Long, pencil-shaped seedlings
D) Small, round seeds
  • 9. What is viviparity in mangrove trees?
A) Resistance to fungal diseases
B) Rapid growth rate
C) Seed germination while still attached to the parent tree
D) Production of multiple flowers
  • 10. Which of these is NOT a typical characteristic used to identify mangrove species?
A) Leaf shape
B) Root system
C) Salt excretion method
D) Soil pH level
  • 11. The position of mangroves in relation to the tide is called?
A) Mitigation
B) Zonation
C) Succession
D) Stratification
  • 12. Red mangroves are typically found in which zone?
A) The landward zone
B) The most seaward zone
C) The zone with the least salinity
D) The mid-zone
  • 13. Which of the following is a key adaptation of mangrove roots?
A) High nitrogen uptake
B) Attraction of pollinators
C) Resistance to herbivory
D) Anaerobic soil tolerance
  • 14. What adaptation helps mangroves handle wave action?
A) Extensive root systems
B) Small leaves
C) Brightly colored flowers
D) A thick waxy coating on their leaves
  • 15. Why are mangroves important for coastal ecosystems?
A) They block sunlight from reaching the water
B) They provide habitat for many species
C) They acidify the soil
D) They increase erosion
  • 16. What is the scientific name for the Red Mangrove?
A) Avicennia germinans
B) Laguncularia racemosa
C) Conocarpus erectus
D) Rhizophora mangle
  • 17. What is the scientific name for the Black Mangrove?
A) Laguncularia racemosa
B) Avicennia germinans
C) Conocarpus erectus
D) Rhizophora mangle
  • 18. What is the scientific name for the White Mangrove?
A) Rhizophora mangle
B) Laguncularia racemosa
C) Conocarpus erectus
D) Avicennia germinans
  • 19. What is the scientific name for the Buttonwood Mangrove?
A) Laguncularia racemosa
B) Rhizophora mangle
C) Avicennia germinans
D) Conocarpus erectus
  • 20. What color is the flower of the red mangrove?
A) Blue
B) Red
C) Purple
D) Yellowish-white
  • 21. What is a key identifying characteristic of White Mangrove leaves?
A) Hairy undersides
B) Waxy upper surface
C) Two salt excreting glands at the base of the leaf blade
D) Sharp points
  • 22. What is the term for a mangrove's ability to tolerate varying degrees of salinity?
A) Halophytic
B) Xerophytic
C) Mesophytic
D) Hydrophytic
  • 23. Where do mangroves get their nutrients?
A) From the air
B) From insects
C) From other trees
D) From the water and sediment
  • 24. What is the shape of black mangrove leaves?
A) Oblong
B) Needle-like
C) Circular
D) Heart-shaped
  • 25. How do mangroves help prevent coastal erosion?
A) They attract seabirds that stabilize the shore
B) Their root systems trap sediment.
C) They release chemicals that harden the sand
D) Their leaves block wind and rain
  • 26. Which mangrove species has round leaves?
A) Buttonwood
B) Black Mangrove
C) White Mangrove
D) Red Mangrove
  • 27. What is the color of the bark of a mature Red Mangrove?
A) Reddish-brown
B) Black
C) Gray
D) Green
  • 28. What is the primary role of pneumatophores?
A) To facilitate gas exchange
B) To store nutrients
C) To anchor the tree in the mud
D) To absorb water
  • 29. Which mangrove species is most sensitive to frost?
A) White Mangrove
B) Red Mangrove
C) Black Mangrove
D) Buttonwood
  • 30. What type of fruit does the buttonwood mangrove produce?
A) A cone-like fruit
B) A pod
C) A capsule
D) A berry
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