About this Study Set
This study set covers Horticulture through
20 practice questions.
Core principles of plant science, cultivation, and soil management for high school students. Every question includes the correct answer so you can learn as you go — pick any format above to get started.
Questions & Answers
Browse all 20 questions from the
Fundamentals of Horticulture study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
Which essential plant nutrient is primarily responsible for promoting healthy green leaf growth?
-
A
Nitrogen
-
B
Phosphorus
-
C
Potassium
-
D
Calcium
2
What is the primary function of the stomata on the underside of a leaf?
-
A
Absorbing soil nutrients
-
B
Gas exchange
-
C
Anchoring the plant
-
D
Storing starch
3
In soil science, which particle size is the smallest?
-
A
Sand
-
B
Silt
-
C
Clay
-
D
Gravel
4
What is the process by which plants convert sunlight into chemical energy?
-
A
Respiration
-
B
Transpiration
-
C
Photosynthesis
-
D
Germination
5
Which botanical term describes a plant that completes its life cycle in exactly one growing season?
-
A
Perennial
-
B
Biennial
-
C
Annual
-
D
Deciduous
6
What pH range is generally considered ideal for most garden plants?
-
A
3.0 to 4.5
-
B
6.0 to 7.0
-
C
9.0 to 10.5
-
D
11.0 to 12.0
7
Which part of the plant is primarily responsible for absorbing water and minerals from the soil?
-
A
Stem
-
B
Flower
-
C
Leaf
-
D
Root
8
What is the term for the method of propagating plants using stem, leaf, or root pieces?
-
A
Grafting
-
B
Cuttings
-
C
Layering
-
D
Budding
9
Which of these is considered a 'macronutrient' required by plants in large amounts?
-
A
Iron
-
B
Zinc
-
C
Magnesium
-
D
Manganese
10
What is the primary purpose of 'mulching' in a vegetable garden?
-
A
To increase soil acidity
-
B
To prevent weed growth and retain moisture
-
C
To improve pollination rates
-
D
To kill soil-borne insects
11
Which group of plants is known for their ability to 'fix' nitrogen in the soil?
-
A
Legumes
-
B
Grasses
-
C
Cacti
-
D
Ferns
12
What does the term 'deciduous' mean in relation to trees and shrubs?
-
A
They stay green all year
-
B
They produce fruit in winter
-
C
They shed their leaves annually
-
D
They are drought-resistant
13
Which tool is most appropriate for pruning thin, woody branches?
-
A
Rake
-
B
Secateurs
-
C
Shovel
-
D
Hoe
14
What is the main role of xylem tissue within a plant?
-
A
Transporting sugars
-
B
Transporting water
-
C
Storing protein
-
D
Protecting the bark
15
What is the term for the growth of a plant toward a light source?
-
A
Geotropism
-
B
Thigmotropism
-
C
Phototropism
-
D
Hydrotropism
16
Which type of soil is characterized by its gritty texture and rapid drainage?
-
A
Clay
-
B
Loam
-
C
Sand
-
D
Peat
17
What is the botanical name for the ripened ovary of a flowering plant?
-
A
Seed
-
B
Fruit
-
C
Flower
-
D
Embryo
18
Which environmental factor most significantly triggers the germination of most seeds?
-
A
Wind
-
B
Moisture
-
C
Soil depth
-
D
Insects
19
What is the primary benefit of crop rotation in a garden?
-
A
Improving soil structure and reducing pest buildup
-
B
Increasing the height of plants
-
C
Making the soil more alkaline
-
D
Preventing the need for sunlight
20
Which gas do plants primarily take in from the atmosphere during photosynthesis?
-
A
Oxygen
-
B
Nitrogen
-
C
Carbon dioxide
-
D
Hydrogen
