Which of the following characteristics may not be seen in all living organisms?

$A$ true species consists of a population that is:

Two plants can be said to belong to the same species if they-

The properties of tissues are:

..... and ...... are characteristics of cells.

Choose the correct sentence$(s)$ regarding the ability of organisms to sense their environment and respond to stimuli.
$1.$ It is a characteristic of non-living things.
$2.$ It is a characteristic of living organisms.
$3.$ It could not be physical,chemical,or biological.