ISA Certified Arborist Practice Exam

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Question: 1 / 50

Which of the following is a component of chlorophyll and is responsible for plant growth?

Sand

Nitrogen

Nitrogen is the correct answer because it is a crucial component of chlorophyll, the green pigment responsible for photosynthesis in plants. Nitrogen is a macronutrient that is essential for plant growth and development. Sand, course textured particles, and macronutrient are not components of chlorophyll and do not play a direct role in photosynthesis or plant growth.

course textured particles

Macronutrient

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