How to Identify and Classify Watercresses
  • 1. Which habitat is MOST suitable for watercress growth?
A) Deep, stagnant lakes
B) Shallow, flowing, nutrient-rich water
C) Dense forests
D) Dry, sandy soil
  • 2. What is the typical leaf shape of watercress?
A) Simple and oval
B) Palmately compound
C) Pinnately compound
D) Needle-like
  • 3. What type of root system does watercress have?
A) Taproot
B) Fibrous
C) Tuberous
D) Aerial
  • 4. What is the scientific name for common watercress?
A) Nasturtium officinale
B) Solanum lycopersicum
C) Brassica oleracea
D) Allium sativum
  • 5. What color are typical watercress flowers?
A) White
B) Red
C) Blue
D) Yellow
  • 6. Watercress belongs to which plant family?
A) Asteraceae
B) Lamiaceae
C) Brassicaceae
D) Rosaceae
  • 7. Which characteristic is MOST helpful in distinguishing watercress from similar plants?
A) Peppery taste
B) Leaf size
C) Stem length
D) Root depth
  • 8. Which environmental factor can influence watercress growth the MOST?
A) Soil pH (if growing aquaponically)
B) Air pressure
C) Humidity
D) Water quality
  • 9. What type of stem does watercress have?
A) Solid
B) Woody
C) Spiny
D) Hollow
  • 10. How is watercress typically propagated?
A) Leaf cuttings
B) Stem cuttings
C) Root division
D) Seeds
  • 11. What season is generally best for watercress growth?
A) Winter (freezing temperatures)
B) Spring/Fall (cooler temperatures)
C) Summer (hot temperatures)
D) All seasons equally
  • 12. Watercress is a good source of which vitamin?
A) Vitamin B12
B) Vitamin K
C) Vitamin D
D) Vitamin A
  • 13. If watercress has yellow leaves, what could be the MOST likely problem?
A) Overwatering
B) Nutrient deficiency
C) Too much sunlight
D) Insect infestation
  • 14. How does watercress spread naturally?
A) Explosive seed pods
B) Animal dispersal
C) Vegetative growth
D) Wind dispersal
  • 15. What is the best way to harvest watercress?
A) Wait for the plant to flower then harvest
B) Only harvest the roots
C) Pull the entire plant out of the water
D) Cut stems above the water line
  • 16. When harvesting watercress from the wild, what is the most important factor to consider?
A) Leaf size
B) Water source cleanliness
C) Flower color
D) Root length
  • 17. What is a key characteristic of the taste of watercress?
A) Peppery
B) Sweet
C) Bitter
D) Sour
  • 18. Which of these locations would be LEAST suitable for finding wild watercress?
A) A desert oasis
B) A natural spring
C) A clear, flowing river
D) A slow-moving stream
  • 19. How should freshly harvested watercress be stored?
A) In a damp paper towel in the refrigerator
B) Submerged in water
C) In a dry bag at room temperature
D) Exposed to direct sunlight
  • 20. What other plant could be easily confused with watercress if not careful?
A) Creeping buttercup
B) Parsley
C) Mint
D) Basil
  • 21. What insect might be seen on watercress?
A) Ladybugs
B) Bees
C) Aphids
D) Grasshoppers
  • 22. What does 'officinale' mean in the watercress scientific name?
A) Medicinal
B) Edible
C) Aquatic
D) Beautiful
  • 23. Watercress is often used raw in salads. Why is this possible?
A) The roots are the most nutritious part.
B) The leaves are tender and have a mild flavor.
C) Cooking destroys its health benefits.
D) It is toxic when cooked.
  • 24. What type of light is best for growing watercress?
A) Full shade
B) Partial shade
C) Artificial light only
D) Full sun
  • 25. What is a sign of overharvesting watercress?
A) Reduced growth rate
B) More vibrant color
C) Larger leaf size
D) Increased flower production
  • 26. Which of the following is NOT a common use for watercress?
A) Soups
B) Making paper
C) Salads
D) Garnish
  • 27. What should you do if you find snails on your watercress?
A) Leave them; they are beneficial
B) Remove them manually
C) Flush the plant with hot water
D) Spray with insecticide
  • 28. What is one of the greatest threats to wild watercress populations?
A) Too much rain
B) Lack of sunlight
C) Habitat destruction
D) Over-consumption
  • 29. Why is flowing water important for watercress growth?
A) It provides oxygen and nutrients
B) It prevents algae growth
C) It washes away pests
D) It keeps the water warm
  • 30. Besides the leaves, which other part of the watercress plant is edible?
A) Seeds
B) Roots
C) Flowers
D) Stems
Created with That Quiz — where test making and test taking are made easy for math and other subject areas.