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Horticulture Knowledge Assessment

Horticulture

A comprehensive test on horticultural principles, plant biology, and cultivation practices.

agriculture botany plants gardening

15 Questions Medium Ages 5+ Jul 20, 2026

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About this Study Set

This study set covers Horticulture through 15 practice questions. A comprehensive test on horticultural principles, plant biology, and cultivation practices. 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 15 questions from the Horticulture Knowledge Assessment study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 What is the process of removing the top layer of bark from a tree trunk to kill it called?

A Girdling
B Pruning
C Coppicing
D Pollarding

2 Which nutrient is primarily responsible for promoting healthy leaf growth and a deep green color in plants?

A Phosphorus
B Potassium
C Nitrogen
D Calcium

3 What is the term for a plant that completes its entire life cycle, from germination to seed production, in one growing season?

A Perennial
B Biennial
C Ephemeral
D Annual

4 Which botanical term refers to the process of plants losing water through the pores in their leaves?

A Transpiration
B Respiration
C Photosynthesis
D Guttation

5 What is the primary function of the xylem in vascular plants?

A Transporting sugars from leaves
B Transporting water from roots
C Providing structural support
D Producing pollen

6 Which type of propagation involves growing a new plant from a single cell or small group of cells in a sterile laboratory environment?

A Layering
B Grafting
C Tissue culture
D Division

7 What is the ideal pH range for most garden vegetables to ensure optimal nutrient uptake?

A 4.0 to 5.0
B 6.0 to 7.0
C 8.0 to 9.0
D 9.0 to 10.0

8 What is the practice of training fruit trees to grow against a wall or fence called?

A Espalier
B Topiary
C Bonsai
D Sculpting

9 Which horticultural term describes the process of allowing seeds to go through a cold period before they will germinate?

A Scarification
B Stratification
C Dormancy
D Vernalization

10 In soil science, which particle size is the smallest?

A Sand
B Silt
C Clay
D Loam

11 What type of plant is a 'lithophyte'?

A A plant that grows in water
B A plant that grows on rocks
C A plant that grows in shade
D A plant that grows in high salt soils

12 What is the primary purpose of 'deadheading' in flower gardening?

A To increase root growth
B To prevent disease
C To encourage further blooming
D To harden off the plant

13 Which of these is a form of asexual plant propagation?

A Sowing seeds
B Cuttings
C Pollination
D Cross-breeding

14 What is the scientific term for the study of the classification of plants?

A Taxonomy
B Ecology
C Morphology
D Pomology

15 Which plant hormone is responsible for cell elongation and is often used in rooting powders?

A Ethylene
B Gibberellin
C Auxin
D Abscisic acid

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