What does the $Oestrous$ cycle indicate?

$I -$ Monera,$II -$ Bryophytes,$III -$ Pteridophytes,$IV -$ Fungi,$V -$ Gymnosperms,$VI -$ Humans,$VII -$ Angiosperms,$VIII -$ Algae.
- In which of the following ways are gametes produced in the organisms listed above?
$\quad\quad$ Through Mitosis $\quad\quad\quad$ Through Meiosis

What are meiocytes?

$A$ bacterium divides every $35$ minutes. If a culture containing $10^5$ cells/ml is grown for $175$ minutes,what will be the cell concentration/ml after $175$ minutes?

Select the incorrect sentence regarding post-fertilization events.

Match the following columns:

List-$I$	List-$II$
$(a)$ Primates	$(1)$ Fusion of gametes
$(b)$ Non-primates	$(2)$ Continuous breeders
$(c)$ Fertilization	$(3)$ Growth phase
$(d)$ Juvenile phase	$(4)$ Seasonal breeders