Citrus × sinensis - Quiz
Citrus sinensis
  • 1. Which two species are the parents of Citrus × sinensis?
A) Citrus maxima and Citrus paradisi
B) Citrus aurantium and Citrus limon
C) Citrus maxima and Citrus reticulata
D) Citrus limon and Citrus reticulata
  • 2. What is the common name for Citrus × sinensis?
A) Sweet orange
B) Sour orange
C) Pomelo
D) Mandarin orange
  • 3. Which of these is explicitly mentioned as a variety of sweet orange?
A) Lemon
B) Grapefruit
C) Blood orange
D) Key lime
  • 4. What is the state flower of Florida?
A) Orange blossom
B) Jasmine
C) Rose
D) Hibiscus
  • 5. Which part of the orange tree is commonly used as a cuticle pusher?
A) Orange leaf
B) Orangewood
C) Orange rind
D) Orange blossom
  • 6. What is a culinary use for orange flower water in Middle Eastern countries?
A) Making perfume
B) Fertilizing soil
C) Masking the taste of hard water
D) Preserving meat
  • 7. Which insect causes serious damage to young sweet orange trees?
A) Aphid
B) Locust
C) Fruit fly
D) Giant swallowtail caterpillar
  • 8. In what year was the first draft genome sequence of the sweet orange published?
A) 2003
B) 2016
C) 2023
D) 2013
  • 9. How many chromosomes does the sweet orange genome have?
A) 12
B) 18
C) 24
D) 9
  • 10. What cultivar was used for the first draft genome sequence of sweet orange?
A) Navel
B) Pera IAC
C) Blood
D) Valencia
  • 11. What is orangewood used for in the watchmaking industry?
A) As oil
B) As springs
C) As fuel
D) As peg wood
  • 12. What are dried orange blossoms used for in Spain?
A) Animal feed
B) Potpourri
C) Garnish for meat
D) Orange tea
  • 13. What is a traditional Egyptian water pitcher made of porous clay called?
A) Urn
B) Amphora
C) Carafe
D) Qullah
  • 14. How do bees contribute to citrus groves during bloom?
A) They remove invasive insects
B) They improve soil quality
C) They prune the leaves
D) They pollinate seeded citrus varieties
  • 15. What is the approximate size of the estimated sweet orange genome mentioned in the first draft?
A) 1000 Mb
B) 367 Mb
C) 100 Mb
D) 620 Mb
  • 16. In 2026, which cultivar was published as a chromosome-scale, haplotype-resolved genome assembly?
A) Navel
B) Mandarin
C) Valencia
D) Pera IAC
  • 17. What is the BUSCO completeness score of the Pera IAC assembly?
A) 87.3%
B) 99.9%
C) 100%
D) 95.0%
  • 18. Which of these is a non-food use for orangewood?
A) Making tea
B) Making perfume
C) Smoking grilled meat
D) Hair styling
  • 19. How is orange blossom honey obtained?
A) Placing beehives in citrus groves during bloom
B) Extracting nectar directly from flowers
C) Infusing honey with orange peel
D) Mixing honey with orange juice
  • 20. Which organ of the tree can be boiled to make tea?
A) Leaves
B) Roots
C) Bark
D) Trunk
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