Which branch of biology is related to the study of fossils?

Increase in $X$ and increase in $Y$ of an individual are $Z$ characteristics of growth.
$X-Y-Z$

Non-living objects:
$(i)$ Grow from the external surface by collecting substances on it.
$(ii)$ Grow from the internal surface like living organisms.
$(iii)$ Do not grow at all.
Which of the following options is correct regarding the growth of non-living objects?

Which of the following statements is incorrect regarding reproduction?

Which of the following statements is incorrect?

Which of the following $statement(s)$ is/are correct?