Xylem is the answer......
When a nerve impulse arrives at the neuromuscular junction, hundreds of small vesicles (pouches) containing the neurotransmitter acetylcholine are released from the axon tip into the synapse.
A synapse is formed when the tip of each axon comes into contact with a muscle fiber. A neuromuscular junction is a type of synapse that connects a motor neuron axon to a muscle fiber.
The musculature of vertebrates is often classified into three categories based on its microscopic structure: striated, cardiac, and smooth muscle. The involuntary, or autonomic, nervous system controls smooth and cardiac muscle.
Learn more about to motor neuron visit here;
brainly.com/question/29368083
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None of these is the correct answer.
<h3>What is the role of Auxin?</h3>
Auxin is a growth hormone that is responsible for the elongation of stem and coleoptile cells by increasing wall loosening through cleavage of these bonds so we can conclude that Auxin is responsible for elongation due to wall loosening.
Learn more about auxins here: brainly.com/question/4693211
Process of cellular respiration in Animal cells
C6H12o6+6O2--->6Co2+energy(ATP)
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Hope this helps