Explain the asexual reproductive structures shown in the figure.

(N/A) $1$. Zoospores: These are microscopic,motile structures involved in asexual reproduction,e.g.,$Chlamydomonas$.
$2$. Conidia: These are non-motile asexual reproductive structures,e.g.,$Penicillium$,$Aspergillus$.
$3$. Buds: Cells in some parts of the body of an organism undergo repeated mitotic divisions to produce a small,raised outgrowth called a bud,which eventually detaches to form a new individual,e.g.,$Hydra$.
$4$. Gemmules: In sponges,specialized internal cell masses are produced,which are enveloped by a protective sheath to survive harsh conditions,e.g.,$Spongilla$,$Sycon$.