Fundamentals of Horticulture

Horticulture

A collection of core knowledge questions regarding plant biology, cultivation techniques, and soil science suitable for the middle school curriculum.

science agriculture botany plants

20 Questions Medium Ages 11+ Jul 17, 2026

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About this Study Set

This study set covers Horticulture through 20 practice questions. A collection of core knowledge questions regarding plant biology, cultivation techniques, and soil science suitable for the middle school curriculum. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

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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 process do plants primarily use to convert light energy into chemical energy?

A Respiration
B Photosynthesis
C Transpiration
D Germination

2 What is the primary function of the xylem in a vascular plant?

A Transporting water and minerals
B Storing starch
C Producing pollen
D Transporting sugars

3 Which soil component is known for having the smallest particle size and high water retention?

A Sand
B Silt
C Clay
D Loam

4 What is the term for the process of removing dead or overgrown branches from a plant to encourage growth?

A Pollination
B Pruning
C Grafting
D Propagation

5 Which of the following is a macronutrient essential for plant growth and often found in fertilizers?

A Gold
B Nitrogen
C Neon
D Silver

6 What is the primary role of the stoma in a plant leaf?

A Absorbing soil nutrients
B Gas exchange
C Anchoring the plant
D Attracting pollinators

7 Which type of plant completes its entire life cycle—from germination to seed production—in one growing season?

A Perennial
B Biennial
C Annual
D Deciduous

8 What is the main purpose of mulch in a garden bed?

A To increase soil acidity
B To prevent weeds and retain moisture
C To provide sunlight to seeds
D To increase soil temperature

9 Which part of the plant is responsible for anchoring it into the ground and absorbing water?

A Stem
B Flower
C Leaf
D Root

10 What is the scientific term for the development of a plant from a seed?

A Germination
B Photosynthesis
C Transpiration
D Pollination

11 Which pH range is generally considered optimal for the majority of vegetable crops?

A 2.0 - 4.0
B 6.0 - 7.0
C 9.0 - 10.0
D 11.0 - 12.0

12 What is the process called when pollen is transferred from the male part of a flower to the female part?

A Fertilization
B Germination
C Pollination
D Photosynthesis

13 Which greenhouse effect describes the trapping of heat to keep plants warm?

A The thermal barrier
B The glazing effect
C The greenhouse effect
D The insulation layer

14 What is the primary function of chlorophyll in plants?

A To absorb light energy
B To protect against pests
C To store genetic material
D To transport water

15 Which technique involves joining a shoot from one plant onto the rootstock of another?

A Grafting
B Layering
C Division
D Cutting

16 What is the term for plants that lose their leaves annually?

A Evergreen
B Deciduous
C Coniferous
D Succulent

17 Which plant structure contains the reproductive organs?

A Flower
B Stem
C Root
D Leaf

18 What is the primary gas absorbed by plants during photosynthesis?

A Oxygen
B Nitrogen
C Carbon dioxide
D Hydrogen

19 Which organism is commonly encouraged in soil to help decompose organic matter?

A Earthworms
B Cockroaches
C Aphids
D Locusts

20 What is the name for the growth of a plant toward a light source?

A Geotropism
B Phototropism
C Hydrotropism
D Thigmotropism

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