Which one of the following abiotic components are not needed for the growth of plants?
Options:
A .  
Sunlight
B .  
Air
C .  
Water
D .  
Rocks
Answer: Option D : D For plants to grow, they need water, air and sunlight. Without them, plants cannot perform photosynthesis. Rocks are not needed for the growth of plants. Plants can grow with and without soil too and they don't need rocks to survive.
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