The plant pigments that are involved in photosynthesis are chlorophyll pigments, mostly chlorophyll A. They are found in chloroplasts.
Can please provide the options.
Answer:
By action potential nerve contract the muscle
Explanation:
The muscle contract when the nervous system sends action potential to the muscle. So the nervous system delivers signal to muscle, the first signal reaches the neuromuscular junction. The signals are passed by a chemical messenger called neurotransmitter release by motor neurons, the chemicals bring reaction and shorten the muscle fibre. When neurotransmitter are absent or reduce in concentration the process reverse and muscle relax again.
Coal would be your answer. Hope I helped!
