Identify the haploid and diploid structures from the following:
$I$ - Zoospore,$II$ - Zygote,$III$ - Egg cell,$IV$ - Gametophyte,$V$ - Sporophyte
Haploid structures $\quad\quad$ Diploid structures

Explain the senescence phase.

Match List-$I$ with List-$II$ and select the correct option:

List-$I$	List-$II$
$(a)$ Sexual reproduction	$(1)$ Binary fission
$(b)$ Asexual reproduction	$(2)$ Budding
$(c)$ Amoeba	$(3)$ Genetic clones
$(d)$ Yeast	$(4)$ Variations

In bacteria,fungi,and lower plants,various thick-walled $A$ are formed,which help them to survive $B$ conditions; these germinate on the availability of a suitable environment. In higher plants,$C$ and some other vegetative reproductive structures serve as means to tide over periods of stress besides helping in dispersal; they germinate to form new plants under favourable moisture and temperature conditions. Choose the correct option for $A, B$,and $C$.

What do organisms primarily consider when they reproduce?

Match List-$I$ with List-$II$:

List-$I$	List-$II$
$a$. Chlamydomonas	$i$. Conidia
$b$. Penicillium	$ii$. Zoospores
$c$. Hydra	$iii$. Gemmules
$d$. Sponge	$iv$. Buds

Choose the correct answer from the options given below: