Which is the primary sex organ of the male reproductive system?

Draw labelled diagrams to illustrate budding in Hydra.

In human females,an event that reflects the onset of the reproductive phase is:

Write two points of difference between asexual and sexual types of reproduction. Describe why variations are observed in the offspring formed by sexual reproduction.

Which of the following organisms does not reproduce by binary fission?

$(a)$ Identify the organisms $A$ and $B$ and the mode of asexual reproduction exhibited by them.
$(b)$ How will an organism be benefitted if it reproduces through spores?
$(c)$ Mention the two asexual methods by which Hydra can reproduce. Explain briefly any one such method.