Sunken stomata are a characteristic feature of $.........$.

It is much easier for a small animal to run uphill than for a large animal,because

Choose the correct option:
$(1)$ Sucrose is converted into glucose and fructose with the help of the enzyme $Invertase$ / $Maltase$.
$(2)$ In fermentation,glucose is converted into ethanol by yeast under $Aerobic$ / $Anaerobic$ conditions.

Match the following and choose the correct option from those given below.

Column $A$	Column $B$
$A$. Molecular oxygen	$(i)$. $\alpha$-Ketoglutaric acid
$B$. Electron acceptor	$(ii)$. Hydrogen acceptor
$C$. Pyruvate dehydrogenase	$(iii)$. Cytochrome $c$
$D$. Decarboxylation	$(iv)$. Acetyl $CoA$

In the terrestrial habitat,which of the following factors affect temperature and rainfall conditions?

Assertion : The inner membrane of mitochondria contains systems involving electron transport.
Reason : The mitochondrial matrix contains enzymes of Kreb's cycle.