Jade Plant Trivia Questions and Answers

green and white flower buds

1: What provinces in South Africa are native habitats for the Jade plant?
A: KwaZulu-Natal and Gauteng
B: KwaZulu-Natal and Eastern Cape
C: Eastern Cape and Western Cape
D: Gauteng and Mpumalanga
Correct Answer: B
Explanation: The Jade plant is native to the KwaZulu-Natal and Eastern Cape provinces of South Africa.

2: What family does the Jade plant belong to?
A: Apocynaceae
B: Crassulaceae
C: Cactaceae
D: Rosaceae
Correct Answer: B
Explanation: The family Crassulaceae includes the Jade plant (Crassula ovata).

3: What is another common name for the Jade plant?
A: Willow tree
B: Money tree
C: Bonsai tree
D: Jadeite tree
Correct Answer: B
Explanation: Another common name for the Jade plant is the money tree, although Pachira aquatica also shares this nickname.

4: How long can direct sunlight exposure last for a Jade plant daily?
A: 2-3 hours
B: 4-6 hours
C: 7-8 hours
D: Less than 1 hour
Correct Answer: B
Explanation: The Jade plant requires four to six hours of direct sun or medium shade exposures with bright light each day.

5: How tall can a Jade plant grow?
A: 1 meter
B: 2.5 meters
C: 3.5 meters
D: 4.5 meters
Correct Answer: B
Explanation: A Jade plant can grow up to around 2.5 meters (8.2 feet).

6: Which pigment might the Jade plant produce to protect itself from harsh sunlight?
A: Chlorophyll
B: Anthocyanin
C: Hemoglobin
D: Carotenoids
Correct Answer: D
Explanation: The Jade plant produces pigments such as carotenoids to protect itself from harsh sunlight and ultraviolet rays.

7: What type of flowers does the Jade plant produce?
A: Blue and violet, star-shaped flowers
B: Small pink or white, star-shaped flowers
C: Large red and yellow, bell-shaped flowers
D: Green and brown, cup-shaped flowers
Correct Answer: B
Explanation: The Jade plant produces small pink or white, star-shaped flowers in winter.

8: Which of these cultivars of Jade plant has gained the Royal Horticultural Society’s Award of Garden Merit?
A: ‘Hummel’s Sunset’
B: ‘Monstruosa’
C: ‘Tricolor’
D: ‘Undulata’
Correct Answer: A
Explanation: ‘Hummel’s Sunset’ is one of the cultivars of the Jade plant that has gained the Royal Horticultural Society’s Award of Garden Merit.

9: What pest is a common attacker of Jade plants?
A: Beetles
B: Aphids
C: Cicadas
D: Whiteflies
Correct Answer: B
Explanation: Aphids are common pests that can infest the stems of Jade plant flowers.

10: The trunk of some Jade plant varieties becomes thick over time, resembling what?
A: A vine
B: A small tree
C: A cactus
D: A fern
Correct Answer: B
Explanation: The trunk of some Jade plant varieties, such as ‘Monstruosa’, becomes thick and resembles a small tree as it ages.

11: During which season does the Jade plant generally flower?
A: Summer
B: Spring
C: Autumn
D: Winter
Correct Answer: D
Explanation: The Jade plant generally produces flowers in winter.

12: Which method of propagation is common for the Jade plant?
A: Sexual reproduction
B: Seed dispersion by wind
C: Vegetative propagation
D: Spore generation
Correct Answer: C
Explanation: In the wild, vegetative propagation is the Jade plant’s main method of reproduction.

13: What is a notable characteristic of ‘Crosby’s Compact’ variety of Jade plant?
A: Large, broad leaves
B: Smaller, usually red leaves
C: Blue-tinted leaves
D: Tall, sprawling branches
Correct Answer: B
Explanation: ‘Crosby’s Compact’ has smaller leaves that are usually red in color.

14: What shape are the flowers of the Jade plant’s ‘Monstruosa’ cultivar?
A: Bell-shaped
B: Cup-shaped
C: Star-shaped
D: Trumpet-shaped
Correct Answer: C
Explanation: The flowers of the Jade plant ‘Monstruosa’ cultivar are small, star-like, and either white or pinkish-white.

15: What can kill scale insects on Jade plants?
A: Applying cold water
B: Using a cotton bud soaked in rubbing alcohol
C: Exposing the plant to more sunlight
D: Pruning the affected branches
Correct Answer: B
Explanation: An infestation of scale insects can be eliminated by killing each insect with a cotton bud or brush that has been soaked in rubbing alcohol.

16: How long does it typically take for roots to begin growing on severed leaves of the Jade plant?
A: About 1 week
B: About 2 weeks
C: About 4 weeks
D: About 6 weeks
Correct Answer: C
Explanation: Roots typically begin to grow on the severed leaves about four weeks after removal from the stem.

17: What is one of the common names for the ‘Monstruosa’ cultivar of the Jade plant?
A: Golden jade
B: ET’s fingers
C: Ruby jade
D: Emerald jade
Correct Answer: B
Explanation: The ‘Monstruosa’ cultivar of the Jade plant is also colloquially known as ET’s fingers.

18: Exposure to what condition can make the leaves of a Jade plant develop a red tinge?
A: Excessive watering
B: High levels of sunlight
C: Cold temperatures
D: Lack of nutrients
Correct Answer: B
Explanation: The leaves of a Jade plant may develop a red tinge when exposed to high levels of sunlight.

19: What does the term ‘hermaphroditic’ mean in relation to Jade plant flowers?
A: Each flower has either male or female parts
B: Each flower has both male and female parts
C: Flowers change from male to female over time
D: Flowers are only female
Correct Answer: B
Explanation: Hermaphroditic flowers have both male and female reproductive parts, which is true for Jade plant flowers.

20: Which environmental factor combination will produce flowering in Jade plants?
A: Longer days, warmer nights, and plenty of water
B: Shorter days, cold nights, and lack of water
C: Consistent daylight, warm nights, and regular watering
D: Short days, warm nights, and heavy watering
Correct Answer: B
Explanation: The combination of shorter days, cold nights, and lack of water for several weeks will produce flowering in Jade plants around the beginning of winter.

21: What can excessive watering of a Jade plant cause?
A: Leaf burn
B: Leaf drop and root rot
C: Faster growth
D: Enhanced flowering
Correct Answer: B
Explanation: Excessive watering can cause leaf drop and root rot in Jade plants.

22: How does a Jade plant exhibit tolerance to different climatic conditions?
A: By changing leaf color
B: By growing larger flowers
C: By storing more water in the stems
D: By producing more sap
Correct Answer: A
Explanation: A Jade plant can exhibit tolerance to different climatic conditions by changing the color of its leaves to pigments such as red, yellow, or producing carotenoids.

23: What kind of bark characteristic is noticeable on older Jade plant branches?
A: Smooth and grayish
B: Shaggy and gray
C: Peeling off in horizontal, brownish stripes
D: Cracked and yellow
Correct Answer: C
Explanation: The bark of older Jade plant branches peels off in horizontal, brownish stripes.

24: What size can the leaf blades of a Jade plant reach up to?
A: 1-3 centimeters long
B: 3-9 centimeters long
C: 5-12 centimeters long
D: 2-5 centimeters long
Correct Answer: B
Explanation: The leaf blades of a Jade plant can reach up to 3-9 centimeters in length.

25: The process of propagation from a Jade plant’s leaves often starts with what step?
A: Immediately planting leaves in soil
B: Letting the leaves dry and callus over
C: Soaking the leaves in water
D: Freezing the leaves
Correct Answer: B
Explanation: Typically, the propagation process starts with letting the leaves dry and callus over before planting.

26: Which part of the Jade plant can cause dermatitis in humans when exposed?
A: Roots
B: Sap or leaves
C: Flowers
D: Seeds
Correct Answer: B
Explanation: Exposure to the sap or leaves of the Jade plant can cause dermatitis in humans.

27: How are hermaphroditic flowers characterized?
A: Only male flowers
B: Only female flowers
C: Flowers with both male and female organs
D: Neither male nor female flowers
Correct Answer: C
Explanation: Hermaphroditic flowers possess both male and female reproductive organs.

28: How many sepals does each flower of a Jade plant have?
A: Three
B: Four
C: Five
D: Six
Correct Answer: C
Explanation: Each flower of a Jade plant has five sepals.

29: What color are the petals of the Jade plant flowers?
A: Blue
B: Red
C: Pink or white
D: Green
Correct Answer: C
Explanation: The petals of Jade plant flowers are pink or white.

30: Which insect can be killed with rubbing alcohol applied with a brush to eliminate infestation on Jade plants?
A: Beetles
B: Caterpillars
C: Mealybugs
D: Honeybees
Correct Answer: C
Explanation: Mealybugs can be killed with a brush soaked in rubbing alcohol to eliminate infestation on Jade plants.

31: Which of the following is not a common pest that affects Jade plants?
A: Beetles
B: Mealybugs
C: Spider mites
D: Aphids
Correct Answer: A
Explanation: Beetles are not typically a common pest that affects Jade plants.

32: Why is the variety ‘Crosby’s Compact’ considered a miniature?
A: It has miniature flowers
B: It requires less water and sunlight
C: Its leaves and branches are smaller than other varieties
D: It has a shorter lifespan
Correct Answer: C
Explanation: ‘Crosby’s Compact’ has smaller leaves and branches, giving it a miniature appearance compared to other varieties.

33: What landscape feature can the Jade plant tolerate in mild weather regions?
A: Heavy rainfall
B: Strong winds
C: Light frost
D: High humidity
Correct Answer: C
Explanation: In regions with mild weather, the Jade plant can withstand some light frost.

34: What distinctive foliage reaction might occur on Jade plants under intense sunlight exposure?
A: Leaves grow larger
B: Leaves turn brighter green
C: Leaves develop yellow and red tinge
D: Leaves become variegated
Correct Answer: C
Explanation: Under intense sunlight, Jade plant leaves can develop a yellow and red tinge.

35: What method can propagate Jade plants aside from cuttings?
A: Seeds
B: Grafting
C: Stray leaves that fall
D: Layering
Correct Answer: C
Explanation: Jade plants can be propagated from stray leaves that fall from the plant.

36: What type of soil drainage is required by the Jade plant?
A: Good drainage
B: Heavy clay soil
C: Waterlogged conditions
D: None required
Correct Answer: A
Explanation: Jade plants should be grown in porous substrate with good drainage to prevent overwatering and root rot.

37: What common characteristic do ‘Monstruosa’ and Sedum rubrotinctum share?
A: Tiny blue flowers
B: Similar looking tubular leaves
C: Same genus
D: Both are aquatic plants
Correct Answer: B
Explanation: ‘Monstruosa’ and Sedum rubrotinctum have a superficial resemblance due to their tubular leaves.

38: What is an effect of overwatering a Jade plant during cold seasons?
A: Enhanced growth
B: Earlier flowering
C: Root rot and leaf fall
D: Larger leaf size
Correct Answer: C
Explanation: Overwatering, especially during cold seasons, can lead to root rot and leaf fall in Jade plants.

39: What is the main method of reproduction for Jade plants in the wild?
A: Seed production
B: Vegetative propagation
C: Pollination by insects
D: Spore release
Correct Answer: B
Explanation: In the wild, the main method of reproduction for Jade plants is vegetative propagation.

40: Which Jade plant cultivar is also referred to as ‘Lemon & Lime’?
A: ‘Monstruosa’
B: ‘Crosby’s Compact’
C: ‘Tricolor’
D: ‘Undulata’
Correct Answer: C
Explanation: The ‘Tricolor’ cultivar of the Jade plant is sometimes referred to as ‘Lemon & Lime’.

41: Which type of insects commonly infest the stems of Jade plant flowers?
A: Mealybugs
B: Aphids
C: Spider mites
D: Thrips
Correct Answer: B
Explanation: Aphids are known to commonly infest the stems of Jade plant flowers.

42: How does the Jade plant’s stem texture and color change with age?
A: Stays the same as leaves
B: Becomes woody and brown
C: Turns black and withers
D: Cracks and curls up
Correct Answer: B
Explanation: As it ages, the stem of the Jade plant becomes woody and brown.

43: What are ET’s fingers in relation to Jade plants?
A: A disease affecting the plant
B: A common pest of the plant
C: A colloquial name for a Jade plant cultivar
D: A part of plant’s root system
Correct Answer: C
Explanation: ET’s fingers is a colloquial name for the ‘Monstruosa’ cultivar of the Jade plant.

44: How should the substrate be during light frost to help the Jade plant withstand cold weather?
A: Waterlogged
B: Dry
C: Freezing
D: Soggy
Correct Answer: B
Explanation: During light frost conditions, it helps for the substrate of the Jade plant to be kept dry for better cold tolerance.

45: Which method cannot propagate Jade plants?
A: Cuttings
B: Seeds
C: Stray leaves
D: Spore germination
Correct Answer: D
Explanation: Jade plants are propagated through cuttings and stray leaves, but not via spore germination.

46: What is a common name for the ‘Hummel’s Sunset’ variety of the Jade plant?
A: Golden jade
B: Rainbow jade
C: Sunset jade
D: Golden sunset
Correct Answer: C
Explanation: ‘Hummel’s Sunset’ is commonly referred to as Sunset jade.

47: What can dermatitis be caused by in relation to the Jade plant?
A: Root rot
B: Sap or leaf exposure
C: Overwatering
D: Insect bites
Correct Answer: B
Explanation: Dermatitis can be caused by exposure to the sap or leaves of the Jade plant.

48: What happens if environmental factors such as temperature and humidity are ideal for Jade plant propagation?
A: Slows growth
B: Does not affect the process
C: Enhances the speed of root and new plant development
D: Prevents leaf fall
Correct Answer: C
Explanation: Ideal temperature and humidity conditions enhance the speed at which roots and new plants develop from propagation.

49: Which type of pests are usually eliminated by soaking cotton bud in rubbing alcohol for Jade plants?
A: Spider mites
B: Aphids
C: Scale insects
D: Thrips
Correct Answer: C
Explanation: Rubbing alcohol on a cotton bud can be used to eliminate scale insects on Jade plants.

50: What result might occur due to inadequate watering of a Jade plant?
A: Blooming year-round
B: Increased leaf size
C: Damage to the plant
D: Enhanced vegetative growth
Correct Answer: C
Explanation: Inadequate watering can also damage the Jade plant, which is sensitive to both overwatering and underwatering.

51: What cause results in peeling bark on the older branches of Jade plants?
A: Pest infestation
B: Excessive watering
C: Aging process
D: Nutrient deficiency
Correct Answer: C
Explanation: Peeling bark in horizontal, brownish stripes on older branches of Jade plants is due to the natural aging process.

52: What is another name for the ‘Monstruosa’ variety indicating its unique leaf structure?
A: Ogre ears
B: Rose petals
C: Snake leaves
D: Poppy claws
Correct Answer: A
Explanation: The ‘Monstruosa’ variety of the Jade plant is also colloquially known as Ogre ears due to its unique leaf structure.

53: Where does the Jade plant rank in terms of care among houseplants?
A: Requires constant attention
B: Moderately labor-intensive
C: Low levels of care needed
D: Difficult to manage
Correct Answer: C
Explanation: The Jade plant is popular as a houseplant because it requires low levels of care.

54: What is the effect of exposing Jade plant leaves to high levels of sunlight?
A: Rapid transpiration
B: Thickening of leaves
C: Development of red or yellow tinge
D: Increased pest resistance
Correct Answer: C
Explanation: Exposing Jade plant leaves to high levels of sunlight can cause them to develop a red or yellow tinge.

55: To which genus does the Jade plant belong?
A: Ficus
B: Euphorbia
C: Crassula
D: Opuntia
Correct Answer: C
Explanation: The Jade plant belongs to the genus Crassula.

56: What is the binomial name of the Jade plant?
A: Crassula ovata
B: Sempervivum tectorum
C: Kalanchoe daigremontiana
D: Echeveria elegans
Correct Answer: A
Explanation: The binomial name of the Jade plant is Crassula ovata.

57: Under which two conditions does Jade plant produce flowers?
A: Warm, long days and limited watering
B: Short, cool days and a dry spell
C: Humid nights and heavy watering
D: Mild frost and consistent irrigation
Correct Answer: B
Explanation: The Jade plant produces flowers during short, cool days coupled with a dry spell.

58: Why is a porous substrate essential for growing Jade plants?
A: Enhances flower size
B: Prevents root rot and waterlogging
C: Promotes taller growth
D: Reduces need for sunlight
Correct Answer: B
Explanation: A porous substrate provides good drainage which prevents root rot and waterlogging in Jade plants.

59: What is the natural height capability of Jade plants indoors?
A: 2.5 meters (8.2 feet)
B: 5 meters (16.4 feet)
C: 1 meter (3.3 feet)
D: 4 meters (13.1 feet)
Correct Answer: A
Explanation: The Jade plant can grow up to about 2.5 meters (8.2 feet) in height indoors.

60: What plant nickname does Pachira aquatica share with the Jade plant?
A: Jade vine
B: Money tree
C: Lucky clover
D: Silver tree
Correct Answer: B
Explanation: Pachira aquatica is also commonly known as the money tree, a nickname it shares with the Jade plant (Crassula ovata).

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