Reusing Plant Cuttings Trivia Questions and Answers

flat lay photo of succulent plant

1: What is the term for a piece of plant used in horticulture to produce a new plant?
A: Cutting
B: Seedling
C: Sprout
D: Graft
Correct Answer: A
Explanation: A cutting is a piece of a plant that is used for vegetative (asexual) propagation in horticulture.

2: What medium is commonly used for placing plant cuttings to grow them?
A: Dry sand
B: Moist soil
C: Shallow water
D: Direct sunlight
Correct Answer: B
Explanation: Cuttings are usually placed in a suitable medium such as moist soil to encourage growth.

3: What is the term for the process when a cutting begins to grow as a new independent plant?
A: Seeding
B: Germinating
C: Striking
D: Splicing
Correct Answer: C
Explanation: Striking is the term used when a plant cutting starts to grow into a new plant.

4: What part of a plant does a stem cutting produce?
A: New leaves
B: New roots
C: New flowers
D: New fruits
Correct Answer: B
Explanation: A stem cutting produces new roots.

5: What part of a plant does a root cutting produce?
A: New leaves
B: New roots
C: New stems
D: New flowers
Correct Answer: C
Explanation: A root cutting produces new stems.

6: What is it called when leaves are used to grow new plants?
A: Leaf seeding
B: Leaf cuttings
C: Leaf striking
D: Leaf grafting
Correct Answer: B
Explanation: Leaf cuttings are pieces of leaves used to grow new plants.

7: What ancient method is described by propagating plants from cuttings?
A: Ancient germination
B: Ancient seeding
C: Ancient cloning
D: Ancient grafting
Correct Answer: C
Explanation: Propagating plants from cuttings is an ancient form of cloning.

8: Why is the method of using cuttings economically advantageous for growers?
A: It is cheaper than buying seeds
B: It creates genetically diverse plants
C: It ensures consistency in plant traits
D: It allows plants to grow faster
Correct Answer: C
Explanation: Using cuttings allows growers to clone plants and ensure consistency in traits.

9: Which type of plant has an evolutionary advantage in using cuttings for reproduction?
A: Tropical plants
B: Aquatic plants
C: Succulents
D: Alpine plants
Correct Answer: C
Explanation: Succulents have evolved to use cuttings for reproduction, increasing their survival rates.

10: What stored resources make cuttings advantageous in a plant’s establishment?
A: Water and minerals
B: Carbon and oxygen
C: Water and carbon
D: Nitrogen and phosphorus
Correct Answer: C
Explanation: Cuttings have stored water and carbon, which are critical for plant establishment.

11: What type of root formation occurs as a normal or stress response in cuttings?
A: Taproot formation
B: Adventitious root formation
C: Fibrous root formation
D: Primary root formation
Correct Answer: B
Explanation: Adventitious root formation occurs as a normal or stress response when cuttings are excised.

12: What hormone is known to increase immediately when a cutting is excised?
A: Ethylene
B: Jasmonic acid
C: Gibberellin
D: Cytokinin
Correct Answer: B
Explanation: Jasmonic acid levels increase immediately, facilitating root formation.

13: What type of cuttings are the easiest to form roots in some species?
A: Semi-hardwood cuttings
B: Hardwood cuttings
C: Softwood cuttings
D: Leaf cuttings
Correct Answer: C
Explanation: Softwood cuttings from rapidly expanding stems form roots relatively easily.

14: What should be the length of softwood cuttings for optimal growth?
A: 5-15 cm
B: 10-20 cm
C: 15-25 cm
D: 20-30 cm
Correct Answer: A
Explanation: Softwood cuttings should be between 5 and 15 centimeters long for optimal growth.

15: What hormone is applied to fresh cuttings to stimulate root growth?
A: Cytokinins
B: Auxin (IAA)
C: Gibberellin
D: Abscisic acid
Correct Answer: B
Explanation: Auxin (IAA) is applied to cuttings to stimulate root growth, enhancing their development.

16: What medium is not recommended for placing plant cuttings?
A: Perlite
B: Vermiculite
C: Clay pellets
D: Dry sand
Correct Answer: D
Explanation: Dry sand is unsuitable because cuttings require a moist medium to avoid dehydration and start rooting.

17: What is the optimal air temperature for softwood cuttings to root?
A: 60°F
B: 70°F
C: 80°F
D: 90°F
Correct Answer: B
Explanation: The optimal air temperature for softwood cuttings is around 70°F.

18: What natural substance can be used as a rooting hormone due to its antiseptic properties?
A: Vinegar
B: Honey
C: Baking soda
D: Lemon juice
Correct Answer: B
Explanation: Honey can aid in rooting due to its natural antiseptic and antifungal properties.

19: What method can propagate a high variety of plant species, including stem and leaf cuttings?
A: Seeding
B: Grafting
C: Aerial layering
D: Cuttings
Correct Answer: D
Explanation: Stem and leaf cuttings can propagate many plant species, making this method versatile and effective.

20: How often should the water be replaced when rooting cuttings in water?
A: Once a day
B: Every few days
C: Weekly
D: Never
Correct Answer: B
Explanation: Water needs to be replaced often to reduce bacteria buildup and root rot risks.

21: What is an alternative way to maintain humidity for cuttings besides placing under plastic sheeting?
A: Increasing soil temperature
B: Using a fine mist
C: Adding direct sunlight
D: Removing foliage
Correct Answer: B
Explanation: A fine mist can keep cuttings adequately hydrated, eliminating the need for plastic sheeting.

22: Which cutting type is recommended for spring from the upper plant branches?
A: Softwood cuttings
B: Hardwood cuttings
C: Leaf cuttings
D: Root cuttings
Correct Answer: A
Explanation: Softwood cuttings are best taken in spring from the upper branches.

23: Which cutting type is generally taken in winter from the lower plant branches?
A: Softwood cuttings
B: Semi-hardwood cuttings
C: Hardwood cuttings
D: Leaf cuttings
Correct Answer: C
Explanation: Hardwood cuttings are typically taken in winter from the lower branches.

24: Why should the root inhibiting hormone levels decrease when a cutting is excised?
A: To promote leaf growth
B: To slow down rooting
C: To increase root formation
D: To enhance flowering
Correct Answer: C
Explanation: Reducing root inhibiting hormones like cytokinin stimulates root formation in cuttings.

25: What is a key component in the physiological process necessary for initiating root formation?
A: Jasmonic acid
B: Gibberellin
C: Auxin
D: Abscisic acid
Correct Answer: C
Explanation: Auxin plays a critical role in the physiological process necessary for initiating root formation.

26: What traditional homemade rooting hormone can be made using willow tree components?
A: Baking soda solution
B: Willow tea
C: Lemon extract
D: Vinegar solution
Correct Answer: B
Explanation: Traditional rooting hormone can be made by soaking shoots or bark from a willow tree in water to make willow tea.

27: What plant root extract is excellent for rooting cuttings and seedlings across various species?
A: Rhizome extract
B: Coco-grass extract
C: Hemlock extract
D: Oak bark extract
Correct Answer: B
Explanation: Extract from crushed coco-grass leaves and bulbs is excellent for rooting cuttings and seedlings across species.

28: What should be removed from softwood cuttings to ensure better rooting?
A: Two-thirds of foliage
B: All roots
C: Flowers
D: Fruits
Correct Answer: A
Explanation: Removing two-thirds of the foliage ensures better rooting and reduces water loss in softwood cuttings.

29: In what environment is rooting hormone typically used to stimulate cuttings’ growth?
A: Cool, dry area
B: Warm, moist area
C: High altitude
D: Submerged in water
Correct Answer: B
Explanation: Rooting hormone is often used in warm, moist environments to stimulate growth in plant cuttings.

30: Which hormone’s concentration increases in cuttings, boosting nitric oxide to initiate root formation?
A: Ethylene
B: Jasmonic acid
C: Auxin
D: Abscisic acid
Correct Answer: C
Explanation: Increased auxin concentration initiates root formation by boosting nitric oxide levels.

31: What should be the maximum air temperature below which softwood cuttings are ideally kept?
A: 60°F
B: 70°F
C: 75°F
D: 80°F
Correct Answer: C
Explanation: Softwood cuttings are ideally kept at air temperatures below 75°F to avoid stimulating pathogen growth.

32: When should foliage be completely removed from hardwood stem cuttings?
A: During rooting phase
B: During planting
C: After planting
D: Before planting
Correct Answer: D
Explanation: Foliage should be completely removed from hardwood stem cuttings before planting to conserve energy and water.

33: What is the first signal molecule to increase at a molecular level when a cutting is excised?
A: Gibberellin
B: Jasmonic acid
C: Cytokinin
D: Ethylene
Correct Answer: B
Explanation: Jasmonic acid spikes first at a molecular level when a cutting is excised, crucial for root formation.

34: What root formation happens when a non-root part generates roots in response to stress or normal development?
A: Taproot formation
B: Adventitious root formation
C: Fibrous root formation
D: Primary root formation
Correct Answer: B
Explanation: Adventitious root formation refers to roots forming from non-root parts due to stress or normal growth.

35: What action should be taken to prevent bacteria buildup when rooting cuttings in water?
A: Provide ample sunlight
B: Reduce water temperature
C: Replace water frequently
D: Add soil to water
Correct Answer: C
Explanation: Frequently replacing water helps prevent bacteria buildup and keeps the cutting environment safe.

36: What household item can aid the rooting process due to antiseptic properties without containing plant hormones?
A: Salt
B: Baking powder
C: Honey
D: Vinegar
Correct Answer: C
Explanation: Honey, with its natural antiseptic properties, can aid cuttings’ rooting process even without plant hormones.

37: When using mist to maintain humidity for cuttings, how should it be applied?
A: Heavy soaking
B: Light, frequent misting
C: Only at night
D: Continuous fog
Correct Answer: B
Explanation: Light misting should be frequent to maintain humidity without overwatering cuttings.

38: In a temperate climate, what condition should semi-hardwood cuttings generally have for best outcomes?
A: Ice cold environment
B: Almost dry soil
C: Humid environment
D: Direct sunlight exposure
Correct Answer: C
Explanation: Semi-hardwood cuttings usually thrive in a humid environment, often achieved using plastic sheeting.

39: What should be avoided to prevent the cutting from rotting during rooting?
A: Excessive misting
B: Full sunlight
C: High humidity
D: Heavy soil
Correct Answer: A
Explanation: Overwatering and excessive misting can cause cutting to rot; thus, a balance is essential.

40: What is the primary benefit of using rooting hormone?
A: Speeds up shoot growth
B: Increases photosynthesis
C: Encourages root growth
D: Reduces leaf size
Correct Answer: C
Explanation: Rooting hormone encourages root growth, making it easier for cuttings to establish themselves.

41: Why should hardened wood be used for some cuttings taken in specific seasons?
A: Resilient to diseases
B: Store more water
C: Easier nutrient uptake
D: Less prone to dehydration
Correct Answer: D
Explanation: Hardened wood is less prone to dehydration, beneficial for winter cuttings.

42: What essential practice should be observed with automated misting systems for cuttings?
A: Constant watering
B: Ventilation maintenance
C: Soil dryness
D: Addition of fertilizers
Correct Answer: B
Explanation: Regular ventilation should be maintained with misting systems to prevent mold and ensure healthy rooting.

43: Which hormone decreases to allow root formation in excised stem cuttings?
A: Cytokinin
B: Ethylene
C: Jasmonic acid
D: Abscisic acid
Correct Answer: A
Explanation: Cytokinin levels decrease when the stem is excised, helping the plant to start root formation.

44: What should the soil saturation level be for optimal cutting growth?
A: About 50%
B: Between 70%-80%
C: Around 85%-95%
D: Above 95%
Correct Answer: C
Explanation: Soil should be kept at 85% to 95% saturation for optimal growth and moisture balance.

45: How does placing cuttings in partial shade benefit their growth?
A: Reduces photosynthesis
B: Prevents dehydration
C: Increases root size
D: Reduces moisture
Correct Answer: B
Explanation: Partial shade prevents dehydration, giving cuttings a better chance to root successfully.

46: At which stage can the light intensity levels be gradually increased for cuttings?
A: Initial sticking
B: Callus formation
C: Root development phase
D: Leaf sprouting
Correct Answer: C
Explanation: Light intensity can be gradually increased after callus formation and during the root development phase.

47: What should be the length of hardwood cuttings for favorable growth results?
A: 3-10 cm
B: 10-15 cm
C: 20-25 cm
D: 25-30 cm
Correct Answer: C
Explanation: Hardwood cuttings should generally be between 20-25 centimeters long to improve growth chances.

48: Why should fog systems in greenhouses be carefully managed?
A: To avoid foliar burn
B: To prevent dehydration
C: To stabilize humidity
D: To reduce pest attacks
Correct Answer: C
Explanation: Careful management of fog systems helps stabilize humidity, vital for cutting health and root formation.

49: What environmental condition is particularly avoided to prevent cuttings from overheating?
A: Direct sun
B: Nighttime exposure
C: Cool breeze
D: Light shade
Correct Answer: A
Explanation: Direct sunlight can cause overheating, so cuttings are usually kept out of the sun to prevent stress and damage.

50: What should be done if fungal growth is observed in the propagation area?
A: Increase water supply
B: Apply sunlight
C: Ventilate the greenhouse
D: Lower air temperature
Correct Answer: C
Explanation: Ventilating the greenhouse can help reduce fungal growth by maintaining air circulation and reducing humidity.

51: What can be an issue if soil moisture is maintained below 85% saturation for cuttings?
A: Overwhelming fungi growth
B: Waterlogged roots
C: Decreased root formation
D: Enhanced leaf sprouting
Correct Answer: C
Explanation: Maintaining soil moisture below 85% saturation can reduce root formation and hinder cutting establishment.

52: Which hormone application was discovered as early as 1935 to induce root formation?
A: Ethylene
B: Gibberellin
C: Indolyl-3-acetic acid (IAA)
D: Cytokinin
Correct Answer: C
Explanation: Indolyl-3-acetic acid (IAA), or auxin, was found in 1935 to induce root formation when applied to cuttings.

53: What is the primary way to avoid dehydration in cuttings?
A: Constant submersion
B: High soil saturation
C: Maintaining a moist medium
D: Reducing air temperature
Correct Answer: C
Explanation: Keeping the medium moist without being waterlogged is crucial to avoid dehydration in cuttings.

54: What term describes plantlets better suited for their environment through the retention of epigenetic memory?
A: Genetic adaptation
B: Phenotypic modification
C: Epigenetic memory
D: Chromatic alteration
Correct Answer: C
Explanation: Epigenetic memory allows plantlets from cuttings to be better suited to their environment, retaining beneficial stress responses.

55: For successful plant propagation, what is the significance of jasmonic acid in cuttings?
A: Enhances leaf growth
B: Inhibits root formation
C: Necessary for root initiation
D: Reduces cell division
Correct Answer: C
Explanation: Jasmonic acid is necessary for initiating root formation in cuttings, making it a critical component in successful propagation.

56: Which type of cuttings might require humid, warm, and partially shaded conditions to strike?
A: Seeds
B: Leaf cuttings
C: Softwood cuttings
D: Hardwood cuttings
Correct Answer: C
Explanation: Softwood cuttings often need humid, warm, and partially shaded conditions to strike and develop roots.

57: What is the effect of high temperatures above 75°F on cuttings in a greenhouse setup?
A: Stimulates pathogen growth
B: Prevents root formation
C: Enhances leaf development
D: Increases soil nutrients
Correct Answer: A
Explanation: High temperatures above 75°F stimulate pathogen growth, which can be detrimental to the cuttings’ health.

58: Name a practice that can enhance the success rate of rooting cuttings in soil.
A: Adding baking soda
B: Using rooting hormone
C: Continuous watering
D: Exposing to direct sunlight
Correct Answer: B
Explanation: Using rooting hormone can significantly improve the success rate of cuttings rooting in soil by promoting root formation.

59: Which part of the plant is commonly buried in the soil when using stem cuttings?
A: Leaf
B: Node
C: Branch
D: Flower
Correct Answer: B
Explanation: A piece of the stem, including at least one leaf node, is typically buried in the soil to encourage root growth in stem cuttings.

60: Why is indirect light recommended for cuttings rather than direct sunlight?
A: To maximize light exposure
B: To avoid foliar burns and dehydration
C: To improve nutrient absorption
D: To accelerate the growth process
Correct Answer: B
Explanation: Indirect light prevents foliar burns and dehydration, which can occur when cuttings are exposed to direct sunlight.

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