Answer: The reactants for photosynthesis are light energy, water, carbon dioxide and chlorophyll.
Gravity
Plant roots always grow downward because specialized cells in root caps detect and respond to gravity. This is an example of a tropism. A tropism is a turning toward or away from a stimulus in the environment. Growing toward gravity is called geotropism.
Answer:
B.During photosynthesis, plants take in carbon dioxide from the air.
Explanation:
A.During photosynthesis, plant roots take in water from soil. - water is part of the hydrosphere, not the atmosphere.
B.During photosynthesis, plants take in carbon dioxide from the air. - this is true, the plant - a living thing and part of the biosphere - takes carbon dioxide from the atmosphere to use during photosynthesis.
C.Through photosynthesis, energy stored in plants is released into the air. - this is false, plants release oxygen into the atmosphere as part of photosynthesis
, which synthesises glucose. It does not release energy.
D.Through photosynthesis, energy stored in plants is transferred to humans who eat them. - this is true, but does not involve the atmosphere (air in the environment)
Answer:
B
Explanation:
The repressor protein blocks the genes from making mRNA
