What is the importance of respiration in plants?

Select the correct option to complete the following statements:
$(1)$ The $TCA$ cycle begins with the condensation of $OAA$ and water with $Acetyl-CoA$ to yield $Citric$ $acid$.
$(2)$ In fermentation,yeast converts glucose into ethanol under $Anaerobic$ conditions.

Energy liberated during the germination of seed can be detected in the form of

Given below are some reactions and the enzymes involved. Identify the $CORRECT$ pairs.

Column $I$	Column $II$
$a.$ Fructose $1,6$-diphosphate $\rightarrow$ $3$-$PGAL$ + $DHAP$	$i.$ Enolase
$b.$ Citrate $\rightarrow$ $CIS$-aconitate	$ii.$ Thiokinase
$c.$ Succinyl $CoA$ $\rightarrow$ Succinate	$iii.$ Aconitase
$d.$ $2$-$PGA$ $\rightarrow$ $PEP$	$iv.$ Aldolase

Given below are two statements:
Statement-$I$: Acetyl $CoA$ formation takes place by oxidative decarboxylation of pyruvic acid.
Statement-$II$: $\beta$-oxidation of fatty acid produces acetyl $CoA$.
In the light of above statements,choose the most appropriate answer from the options given below.

In the sieve elements,which one of the following is the most likely function of $P-$ proteins?