How many of the animal phyla include single celled animals?

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Prof. Carmelo Hilpert · Accepted Answer

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Prof. Carmelo Hilpert · Answer

None of the animal phyla include single celled animals. Majorly all group of animals are classified under the kingdom Animalia. The chief characteristic is that all species of animals are eukaryotic and multi -cellular. The animals have a heterotrophic mode of nutrition unlike plants and algae which are autotrophs. Most organisms of this kingdom are motile and reproduce sexually only with few exceptions. The body of the animals is well organized into tissues or complex organ for performing specific functions.

Prof. Carmelo Hilpert · Answer

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.   read more on -

Prof. Carmelo Hilpert · Answer

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Dr. Reggie Bosco DVM

How many of the animal phyla include single celled animals?

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