Plant Propagation: Learn the Art of Growing New Plants

Question 1

Which of the following is NOT a method of plant propagation?

Accepted Answer

Pruning

Answer

Seed saving

Answer

Cuttings

Answer

Layering

Question 2

Which type of cutting is taken from a green, non-woody stem?

Accepted Answer

Softwood cutting

Answer

Hardwood cutting

Answer

Semi-hardwood cutting

Answer

Root cutting

Question 3

When using cuttings for plant propagation, rooting hormones can stimulate:

Accepted Answer

Root development

Answer

Shoot growth

Answer

Flowering

Answer

Seed germination

Question 4

The process of seed germination typically occurs in the following sequence:

Accepted Answer

Imbibition, radicle emergence, hypocotyl elongation

Answer

Radicle emergence, hypocotyl elongation, imbibition

Answer

Hypocotyl elongation, radicle emergence, imbibition

Answer

Imbibition, hypocotyl elongation, radicle emergence

Question 5

Softwood cuttings are typically taken in the spring or early summer because:

Accepted Answer

Stems are actively growing and contain high levels of auxin.

Answer

Stems are less likely to wilt during this time.

Answer

Softwood is easier to cut and root.

Answer

There is more sunlight available during this time.

Question 6

Grafting is commonly utilized to propagate fruit trees. Which type of graft involves a diagonal cut on both the rootstock and the scion?

Accepted Answer

Whip and tongue graft

Answer

Cleft graft

Answer

Budding

Answer

Bridge grafting

Question 7

When sowing seeds, it is important to plant them at the appropriate depth. Sowing seeds too deeply can:

Accepted Answer

Reduce germination and seedling emergence

Answer

Promote faster root development

Answer

Protect seeds from pests and diseases

Answer

Provide better nutrient availability

Question 8

How does grafting improve plant traits like disease resistance or fruit quality?

Accepted Answer

Combining rootstock and scion from different plant varieties of the same species

Answer

Exposing the plant to varying light conditions

Answer

Altering the plant's genetic makeup through genetic engineering

Question 9

For successful seed germination, which two factors are essential?

Accepted Answer

Temperature and moisture

Answer

Temperature and light

Answer

Moisture and light

Question 10

What is the process of collecting and storing seeds for future use called?

Accepted Answer

Seed saving

Answer

Cutting

Answer

Layering

Answer

Grafting

Question 11

Which of the following is NOT a type of cutting used in plant propagation?

Accepted Answer

Flower cutting

Answer

Softwood cutting

Answer

Hardwood cutting

Answer

Leaf cutting

Question 12

In grafting, the plant that provides the roots is called the:

Accepted Answer

Rootstock

Answer

Scion

Answer

Interstock

Answer

Cambium

Question 13

What is the main purpose of using a rooting hormone when propagating plants from cuttings?

Accepted Answer

To stimulate root growth

Answer

To prevent disease

Answer

To provide nutrients

Answer

To increase water absorption

Question 14

When taking stem cuttings, it is essential to select stems that are:

Accepted Answer

Soft and succulent

Answer

Hard and woody

Answer

Flowering

Answer

Diseased

Question 15

Which of the following factors does NOT affect seed viability and longevity?

Accepted Answer

Soil pH

Answer

Age

Answer

Storage conditions

Answer

Plant species

Question 16

When grafting, the scion is the:

Accepted Answer

Upper part of the plant that is grafted onto the rootstock

Answer

Lower part of the plant that supports the scion

Answer

Rootstock that is grafted onto the scion

Answer

Material that binds the scion and rootstock together

Question 17

The propagation method that involves bending a stem to develop roots in the ground is called:

Accepted Answer

Layering

Answer

Budding

Answer

Marcotting

Answer

Etiolation

Question 18

How do plant propagation techniques benefit the horticultural industry and the environment? Consider their impact on plant conservation and biodiversity.

Accepted Answer

Increased plant diversity, reduced environmental impact, and cost-effective plant production

Answer

Increased plant production only, with no impact on sustainability

Answer

Reduced plant diversity, increased environmental impact, and higher production costs

Question 19

When choosing seeds for propagation, which factor is crucial for maximizing success?

Accepted Answer

Seed variety and quality

Answer

Water and sunlight availability

Answer

Soil type and pH level

Answer

Gardener's experience

Question 20

Which of the following is not a method of plant propagation?

Accepted Answer

Spores

Answer

Seed saving

Answer

Cuttings

Answer

Budding

Question 21

What is the difference between softwood cuttings and hardwood cuttings?

Accepted Answer

Softwood cuttings are taken from new, green growth, while hardwood cuttings are taken from mature, woody stems

Answer

Hardwood cuttings are taken from new, green growth, while softwood cuttings are taken from mature, woody stems

Answer

Softwood cuttings are more difficult to root than hardwood cuttings

Answer

Hardwood cuttings are more difficult to root than softwood cuttings

Question 22

What is the role of rooting hormone in plant propagation?

Accepted Answer

To promote the formation of roots

Answer

To prevent disease

Answer

To enhance water absorption

Answer

To increase leaf size

Question 23

Which of the following is a method of propagating plants by taking a piece of a stem or leaf and rooting it?

Accepted Answer

Cuttings

Answer

Seed saving

Answer

Grafting

Answer

Layering

Question 24

Which factor does NOT affect the success of plant propagation?

Accepted Answer

Luck

Answer

Soil type

Answer

Water availability

Answer

Temperature

Question 25

Grafting involves:

Accepted Answer

Joining two or more different plant parts together

Answer

Growing a new plant from a bulb

Answer

Taking a cutting from an existing plant

Answer

Saving seeds for future use

Question 26

What does layering in plant propagation involve?

Accepted Answer

Bending a branch and burying it in the soil to grow roots

Answer

Taking a section of a plant stem and growing it as a new plant

Answer

Joining two plant parts together to create a new plant

Answer

Removing leaves from a plant stem before taking a cutting

Question 27

What is the purpose of using a rooting hormone when taking cuttings?

Accepted Answer

To promote root growth

Answer

To prevent disease

Answer

To harden the stem

Answer

To increase water absorption

Question 28

What is the process of removing leaves from a plant stem before taking a cutting called?

Accepted Answer

Stripping

Answer

Pruning

Answer

Notching

Answer

Rooting

Question 29

Which hormone is commonly used to promote root growth in cuttings?

Accepted Answer

Auxin

Answer

Cytokinin

Answer

Gibberellin

Answer

Abscisic acid

Question 30

What type of stem cutting is taken from a soft, new growth?

Accepted Answer

Softwood cutting

Answer

Hardwood cutting

Answer

Semi-hardwood cutting

Answer

Root cutting

Question 31

What are the main factors that cause seed dormancy, and how can we break it?

Accepted Answer

Seed dormancy is caused by chemical inhibitors in the seed coat and an immature embryo.

Accepted Answer

Methods to overcome seed dormancy include stratification, scarification, and gibberellic acid treatment.

Answer

Seed dormancy only occurs in tropical plants.

Question 32

Which type of grafting involves joining the rootstock and scion by aligning their cambium layers?

Accepted Answer

Whip and tongue grafting

Answer

Bud grafting

Answer

Crown grafting

Answer

Side grafting

Question 33

What is the primary function of root hormones in plant propagation?

Accepted Answer

To encourage the development of roots

Answer

To protect against disease

Answer

To toughen and prepare plants for outdoor conditions

Answer

To promote flowering and fruit production

Question 34

Which of the following is NOT an advantage of seed saving?

Accepted Answer

Improving plant health

Answer

Preserving genetic diversity

Answer

Reducing the cost of gardening

Answer

Ensuring the availability of specific varieties

Question 35

What is the optimal temperature range for propagating most plants from cuttings?

Accepted Answer

15-25°C

Answer

10-15°C

Answer

25-35°C

Answer

35-45°C

Question 36

What is the process of taking a cutting from a plant and rooting it to create a new plant called?

Accepted Answer

Propagation by cuttings

Answer

Grafting

Answer

Layering

Answer

Seed germination

Question 37

Which type of cutting involves removing a section of stem with a heel of older wood attached?

Accepted Answer

Heel cutting

Answer

Leaf cutting

Answer

Stem cutting

Answer

Root cutting

Question 38

What is the purpose of using a rooting hormone when propagating plants by cuttings?

Accepted Answer

To stimulate root growth

Answer

To prevent disease

Answer

To provide nutrients

Answer

To seal the cut end

Question 39

What is the process of joining two or more plant tissues together to create a new plant called?

Accepted Answer

Grafting

Answer

Tissue culture

Answer

Budding

Answer

Layering

Question 40

Which type of grafting involves inserting a scion into a T-shaped cut in the rootstock?

Accepted Answer

T-budding

Answer

Whip and tongue grafting

Answer

Side veneer grafting

Answer

Cleft grafting

Question 41

What is the purpose of using a grafting wax when grafting plants?

Accepted Answer

To seal the graft union

Answer

To provide nutrients

Answer

To stimulate root growth

Answer

To prevent disease

Question 42

Grafting, a horticultural technique, is most successful when performed on plants that:

Accepted Answer

Share a close genetic relationship and have compatible vascular systems.

Answer

Belong to different species but exhibit similar growth habits.

Answer

Are struggling to survive or are affected by diseases.

Question 43

The primary purpose of grafting in horticulture is to:

Accepted Answer

Combine the desirable traits of two distinct plants onto a single rootstock.

Answer

Propagate rare or endangered plant species.

Answer

Repair damaged or diseased plants.

Question 44

The primary distinction between seed propagation and vegetative propagation is that:

Accepted Answer

Seed propagation generates genetically diverse offspring, whereas vegetative propagation produces genetically identical offspring.

Answer

Seed propagation is a more time-consuming process than vegetative propagation.

Question 45

Among the seed storage techniques, which method is employed to maintain the viability of seeds for extended periods?

Accepted Answer

Cryopreservation.

Answer

Scarification.

Answer

Stratification.

Answer

Grafting.

Question 46

Artificial propagation methods offer an advantage by enabling the production of plants that:

Accepted Answer

May not be readily available through natural means.

Answer

Are more environmentally sustainable.

Answer

Are less expensive to produce.

Question 47

Which of the following is NOT a commonly used method for plant propagation?

Accepted Answer

Fertilization

Answer

Seed saving

Answer

Cuttings

Answer

Grafting

Question 48

When taking stem cuttings, which part of the plant should you select?

Accepted Answer

Nodes

Answer

Stomata

Answer

Roots

Answer

Flowers

Question 49

What is a primary advantage of using cuttings for plant propagation?

Accepted Answer

Faster results compared to seed saving

Answer

Genetic diversity

Answer

Cost-effectiveness

Question 50

What is the critical factor that determines the success of grafting?

Accepted Answer

Compatibility between the rootstock and scion

Answer

Size of the rootstock

Answer

Type of grafting technique used

Answer

Environmental conditions

Question 51

When selecting seeds for saving, which characteristic is most important to prioritize?

Accepted Answer

Health and vigor of the parent plant

Answer

Color of the seeds

Answer

Size of the seeds

Question 52

What is the main purpose of stratification in seed saving?

Accepted Answer

Breaking seed dormancy

Answer

Improving germination rate

Answer

Protecting seeds from pests

Answer

Increasing seed size

Question 53

Which of the following techniques involves layering the plant to stimulate root growth?

Accepted Answer

Marcottage

Answer

Grafting

Answer

Tissue culture

Answer

Budding

Question 54

What is the primary advantage of using tissue culture for plant propagation?

Accepted Answer

Rapid production of disease-free plants

Answer

Genetic diversity

Answer

Cost-effectiveness

Question 55

When choosing a propagation method, which factor is crucial to consider?

Accepted Answer

Plant species and its propagation requirements

Answer

Amount of time available

Answer

Availability of materials