<span>A method of deducing the correct species
assignment of a living thing is known as dichotomous key, which is also called
identification key. It works by requiring a user to choose two alternatives at
each step and the choice of one alternatives give the name of the organism or
direct further down in the key. However, a common error in using dichotomous
key is the assumption that the correct name or identification of the organism
is even included in the set of key. Therefore, this method alone is not reliable
to identify specific species.</span>
Answer:
Hope it helps
Explanation:
The Evolution of the capacity for culture is important in order to understand how the human body works. This is also the case for developing methods necessary for solving problems that may arise from accidents, diseases, and sickness.
Answer:
Sympathetic nervous system activation constricts arteries found within the salivary glands
Explanation:
The ANS controls the involuntary contraction of the heart cardiac muscles, glands, intestine,the peripheral resistance of vascular systems, and the rate of pumping of the blood by the heart.
Thus, the ANS system during stressful conditions increases the blood pressure,heart rate, constrict blood vessels in glands and intestine and dilate the pupils, in anticipation for fight or flight.
Answer:True
Explanation:
Nerve impulse must reach a certain threshold in a neuron before action potential can be generated to intiate conduction of action potential.
Therefore if mutiple impulses are generated and these are not upto thresholds , no matter how strong the stimulI are-NO ACTION POTENTIAL WILL BE GENERATED.
THIS IS ALL OR NONE PRINCIPLE
The all or none hypotheses can be best explain with flushing of the water closet after using it. If required volume of water is not pumped into the water closet storage above, no matter how long the handle is push, FLUSHING WILL NOT TAKE PLACE.Thus the threshold volume of water must be met.
