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