Question

Why are unicellular organisms are considered living even though they lack many functions?

Answer 1

as they perform most of the life processes like respiration,excretion etc which are performed by multicellular organisms,so they are considered as living

Answer 2

Unicellular organisms are considered as living because they are performing similar activities like multicellular organisms such as respiration,excretion,etc,. And how can they are turned as non-living even if they are observed under a microscope as they ate moving from one place to another and also they hunt such as amoeba is a unicellular it produces false feet around that particular insect and take away all the nutrition from that living body and excretes the unwanted things.
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