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What is the most important external stimulus needed for a plant to carry out photosynthesis? A. Sunlight B. Soil C. Fertilizer D. Warmth
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What is the most important external stimulus needed for a plant to carry out

photosynthesis?
A. Sunlight
B. Soil
C. Fertilizer
D. Warmth

User Marlon Ruiz
by
4.5k points

1 Answer

3 votes

Answer:

A. Sunlight

Step-by-step explanation:

The chlorophyll in plant cells abosrb sunlight to photosynthesise. It is needed because all energy on earth comes from the sun. Energy is never created or lost, it simply changes forms.

User Bobz
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