Master Gardener Exam 2025 Questions and Correct
Answers | 2025/2026 | Verified Answers | INSTANT
DOWNLOAD!!
Covering all key Master Gardener topics: plant science, soils, propagation, pest
management, pruning, turf, environmental stewardship, and home gardening
best practices.
1. Which part of the plant is primarily responsible for water and nutrient
uptake?
a) Stem
b) Leaf
c) Root (Correct Answer)
d) Flower
Rationale: Roots absorb water and nutrients from the soil, supporting plant growth
and development.
2. What is the primary function of chlorophyll in plants?
a) Store water
b) Capture light energy for photosynthesis (Correct Answer)
c) Protect against pests
d) Absorb minerals
Rationale: Chlorophyll absorbs sunlight, which is used to produce energy during
photosynthesis.
3. Which soil component is most important for retaining moisture?
a) Sand
b) Silt
c) Clay (Correct Answer)
d) Gravel
,Rationale: Clay particles hold water and nutrients due to their small size and surface
area.
4. What is the ideal pH range for most garden plants?
a) 3.5–4.5
b) 6.0–7.0 (Correct Answer)
c) 8.0–9.0
d) 4.5–5.5
Rationale: Slightly acidic to neutral soil allows optimal nutrient availability for most
plants.
5. Which of the following is a common method of vegetative plant propagation?
a) Seed sowing
b) Stem cuttings (Correct Answer)
c) Cross-pollination
d) Grafting
Rationale: Vegetative propagation uses parts of a parent plant to produce genetically
identical offspring.
6. What is the primary purpose of pruning?
a) Increase pest populations
b) Remove dead or diseased wood and improve growth (Correct Answer)
c) Reduce water use
d) Change leaf color
Rationale: Pruning maintains plant health, encourages flowering, and prevents
structural problems.
7. Which pest is known for creating tunnels in tree bark and causing dieback?
a) Aphids
b) Slugs
c) Borers (Correct Answer)
d) Leaf miners
Rationale: Borers feed under the bark, disrupting nutrient flow and weakening trees.
, 8. What is Integrated Pest Management (IPM)?
a) Spraying chemicals weekly
b) Combining biological, cultural, mechanical, and chemical methods (Correct
Answer)
c) Ignoring pests
d) Using only natural predators
Rationale: IPM aims to manage pests sustainably, reducing environmental impact and
pesticide use.
9. Which nutrient is most important for leafy growth in plants?
a) Phosphorus
b) Potassium
c) Nitrogen (Correct Answer)
d) Calcium
Rationale: Nitrogen promotes vegetative growth and is essential for chlorophyll
production.
10. What is the primary benefit of composting garden waste?
a) Reduces soil pH
b) Improves soil structure and fertility (Correct Answer)
c) Attracts pests
d) Prevents flowering
Rationale: Compost adds organic matter, enhances nutrient content, and improves
water retention.
11. Which plant structure produces pollen?
a) Stem
b) Leaf
c) Anther (Correct Answer)
d) Root
Rationale: The anther, part of the stamen, produces pollen for plant reproduction.
12. What is the correct planting depth for most vegetable seeds?
a) On the surface
b) 2–3 times the seed’s diameter (Correct Answer)
Answers | 2025/2026 | Verified Answers | INSTANT
DOWNLOAD!!
Covering all key Master Gardener topics: plant science, soils, propagation, pest
management, pruning, turf, environmental stewardship, and home gardening
best practices.
1. Which part of the plant is primarily responsible for water and nutrient
uptake?
a) Stem
b) Leaf
c) Root (Correct Answer)
d) Flower
Rationale: Roots absorb water and nutrients from the soil, supporting plant growth
and development.
2. What is the primary function of chlorophyll in plants?
a) Store water
b) Capture light energy for photosynthesis (Correct Answer)
c) Protect against pests
d) Absorb minerals
Rationale: Chlorophyll absorbs sunlight, which is used to produce energy during
photosynthesis.
3. Which soil component is most important for retaining moisture?
a) Sand
b) Silt
c) Clay (Correct Answer)
d) Gravel
,Rationale: Clay particles hold water and nutrients due to their small size and surface
area.
4. What is the ideal pH range for most garden plants?
a) 3.5–4.5
b) 6.0–7.0 (Correct Answer)
c) 8.0–9.0
d) 4.5–5.5
Rationale: Slightly acidic to neutral soil allows optimal nutrient availability for most
plants.
5. Which of the following is a common method of vegetative plant propagation?
a) Seed sowing
b) Stem cuttings (Correct Answer)
c) Cross-pollination
d) Grafting
Rationale: Vegetative propagation uses parts of a parent plant to produce genetically
identical offspring.
6. What is the primary purpose of pruning?
a) Increase pest populations
b) Remove dead or diseased wood and improve growth (Correct Answer)
c) Reduce water use
d) Change leaf color
Rationale: Pruning maintains plant health, encourages flowering, and prevents
structural problems.
7. Which pest is known for creating tunnels in tree bark and causing dieback?
a) Aphids
b) Slugs
c) Borers (Correct Answer)
d) Leaf miners
Rationale: Borers feed under the bark, disrupting nutrient flow and weakening trees.
, 8. What is Integrated Pest Management (IPM)?
a) Spraying chemicals weekly
b) Combining biological, cultural, mechanical, and chemical methods (Correct
Answer)
c) Ignoring pests
d) Using only natural predators
Rationale: IPM aims to manage pests sustainably, reducing environmental impact and
pesticide use.
9. Which nutrient is most important for leafy growth in plants?
a) Phosphorus
b) Potassium
c) Nitrogen (Correct Answer)
d) Calcium
Rationale: Nitrogen promotes vegetative growth and is essential for chlorophyll
production.
10. What is the primary benefit of composting garden waste?
a) Reduces soil pH
b) Improves soil structure and fertility (Correct Answer)
c) Attracts pests
d) Prevents flowering
Rationale: Compost adds organic matter, enhances nutrient content, and improves
water retention.
11. Which plant structure produces pollen?
a) Stem
b) Leaf
c) Anther (Correct Answer)
d) Root
Rationale: The anther, part of the stamen, produces pollen for plant reproduction.
12. What is the correct planting depth for most vegetable seeds?
a) On the surface
b) 2–3 times the seed’s diameter (Correct Answer)
