ISA Certified Arborist- Correctly Solved Mock Exam Question and Answers [100% Correct] 2025/2026 (Updated)
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Course
Arborist
Institution
Arborist
ISA Certified Arborist- Correctly Solved
Mock Exam Question and Answers [100%
Correct] 2025/2026 (Updated)
1. What term is used to describe areas where rapid cell division occurs in shoot tips, root tips, and
cambium?
Meristems
2. The primary meristems at the tips of the shoots are ...
ISA Certified Arborist- Correctly Solved
Mock Exam Question and Answers [100%
Correct] 2025/2026 (Updated)
1. What term is used to describe areas where rapid cell division occurs in shoot tips, root tips, and
cambium?
Meristems
2. The primary meristems at the tips of the shoots are referred to as which type of meristem?
Apical
3. What phenomenon refers to the inhibitory effect of terminal buds on the growth of lateral buds?
Apical dominance
4. What part of a tree is responsible for its role in producing food through photosynthesis?
Leaves
5. Which process involves the combination of carbon dioxide and water, using light to create sugars, and
releases oxygen as a byproduct?
Photosynthesis
6. The green pigment in leaves essential for photosynthesis is called what?
Chlorophyll
7. What is the term for the loss of water vapor from leaves?
Transpiration
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, 8. Which structures control the opening and closing of stomata, regulating both gas exchange and
transpiration?
Guard cells
9. What tissue is responsible for the transport of water and essential minerals within a tree? What tissue
conducts carbohydrates?
Xylem, phloem
10. Which layer of cells, found between the xylem and phloem, is responsible for producing new tissue?
Cambium
11. What is the term for the tissue formed when trunk tissue grows around branch tissue at a branch
union?
Branch collar
12. What structure protects a tree’s trunk and branches from mechanical damage and water loss?
Bark
13. Which functions are associated with a tree’s root system?
Absorption, conduction, anchorage, storage, hormone production
14. What process allows water to enter young or mycorrhizal roots?
Osmosis
15. What is the term for the growth direction of a plant in response to external stimuli, such as light or
gravity?
Tropism
16. What does the acronym CODIT stand for in tree biology?
Compartmentalization of decay in trees
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