Question 5
Which statement about the characteristics of living things is true?
The right answer is the one marked above.
Every living unit expresses one or more of the characteristics outwardly. Showing all eight at once is not required.
“All eight characteristics at all times” is wrong — a seed is not growing, yet it is alive. “Everything that shows a living characteristic is alive” is wrong too: a crystal "grows" and is not alive. So is “living and non-living can always be told apart”; the virus is the standing example.