Question 1
Reproduction is essential for which of these?
The right answer is the one marked above.
Maintaining the continuity of life. Reproduction is the one life process an organism does not carry out for its own sake — an organism that never reproduces is not harmed by it. What ends is the line it belongs to.
The other three are things an individual does to keep itself going — nutrition, respiration, irritability. Only reproduction works on the generation after it.