Meisterprüfung Gärtner Practice Questions - Österreichische Meisterprüfung für das reglementierte Handwerk der Gärtner (Master Craftsman in Horticulture & Gardening) Exam - Meisterprüfung Gärtner Practice Questions - Österreichische Meisterprüfung für das reglementierte Handwerk der Gärtner (Master Craftsman in Horticulture & Gardening) Exam

Question 1

Which physiological mechanism characterizes Crassulacean Acid Metabolism (CAM) in succulent ornamental plants such as Kalanchoe blossfeldiana and Echeveria?

Nocturnal stomatal opening to fix CO2 into malate via PEP carboxylase, followed by daytime malate decarboxylation behind closed stomata Continuous day and night stomatal opening with direct CO2 fixation via Rubisco exclusively in the mesophyll palisade cells Exclusive daytime CO2 fixation using specialized Kranz anatomy to separate light reactions from the Calvin cycle spatially Fixation of atmospheric nitrogen in root nodules during the night to support photosynthetic carbon reduction during the day

Correct Answer:

Nocturnal stomatal opening to fix CO2 into malate via PEP carboxylase, followed by daytime malate decarboxylation behind closed stomata

Question 2

What primary physiological function is exhibited by the phytohormone auxin (indole-3-acetic acid / IAA) during the vegetative propagation of stem cuttings (Stecklingsvermehrung)?

Stimulation of lateral axillary bud breakout and suppression of primary taproot growth Promotion of adventitious root formation (Adventivbewurzelung) and maintenance of apical dominance (Apikaldominanz) Induction of rapid leaf abscission and acceleration of flower petal senescence Inhibition of cell elongation in the hypocotyl and acceleration of seed dormancy

Correct Answer:

Promotion of adventitious root formation (Adventivbewurzelung) and maintenance of apical dominance (Apikaldominanz)

Question 3

In the photoperiodic control of short-day ornamental crops such as Euphorbia pulcherrima and Chrysanthemum, which phytochrome state and light spectrum inhibit flower bud induction when applied during the night period?

Conversion of the active Pfr form to the inactive Pr form by far-red light (~730 nm) during a night break Direct degradation of cryptochrome blue-light receptors by ultraviolet UV-A radiation Conversion of the inactive Pr form to the active Pfr form by red light (~660 nm) during a night break Stabilization of zeaxanthin pigments through green light (~520 nm) night interruption

Correct Answer:

Conversion of the inactive Pr form to the active Pfr form by red light (~660 nm) during a night break

Question 4

What biophysical and ion-transport mechanism drives the opening of stomatal guard cells (Schließzellen) in response to light in greenhouse crops?

Passive efflux of potassium (K+) ions into surrounding epidermal cells causing cell wall shrinking Synthesis of abscisic acid (ABA) within the chloroplast stroma leading to immediate vacuolar water uptake Calcium (Ca2+) influx into the cytoplasm triggering rapid cell wall rigidification and water loss Active proton (H+) extrusion by plasma membrane H+-ATPases driving potassium (K+) and chloride/malate influx, increasing turgor

Correct Answer:

Active proton (H+) extrusion by plasma membrane H+-ATPases driving potassium (K+) and chloride/malate influx, increasing turgor

Question 5

How does the DIF method (difference between day and night temperature) regulate stem elongation (Höhensteuerung) in greenhouse bedding and pot plants without chemical growth retardants?

A negative DIF (day temperature lower than night temperature) or a morning temperature drop suppresses internode elongation by reducing endogenous gibberellin activity A positive DIF (day temperature higher than night temperature) suppresses internode elongation by maximizing photosynthetic carbohydrate accumulation A negative DIF increases stem elongation by promoting rapid cell division in the apical meristem during the night A zero DIF (equal day and night temperature) halts all vegetative growth by inducing permanent stomatal closure

Correct Answer:

A negative DIF (day temperature lower than night temperature) or a morning temperature drop suppresses internode elongation by reducing endogenous gibberellin activity

Question 1

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Prepare with the Meisterprüfung Gärtner Practice Questions - Österreichische Meisterprüfung für das reglementierte Handwerk der Gärtner (Master Craftsman in Horticulture & Gardening) Exam practice quiz. This question bank includes 100 questions covering greenhouse, crops, nursery, primary, and horticultural. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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Meisterprüfung Gärtner Practice Questions - Österreichische Meisterprüfung für das reglementierte Handwerk der Gärtner (Master Craftsman in Horticulture & Gardening) Exam

This practice set contains 100 questions from the matching question bank and focuses on greenhouse, crops, nursery, primary, and horticultural. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

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Meisterprüfung Gärtner Practice Questions - Österreichische Meisterprüfung für das reglementierte Handwerk der Gärtner (Master Craftsman in Horticulture & Gardening) Exam

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