Which of the following is indispensable in all culture

$\begin{array}{|p{0.6\linewidth}|p{0.3\linewidth}|} \hline Column\,\,-I & Column\,\,-II \\ \hline (1)\,\,cyclic\,\,photopho & (a)\,\,Only\,\,PS\,\,-\,\,I \\ \hline (2)\,\,Non-cycli\,\,photo-\,\,phosphorylation & (b)\,\,ATP\,\,formed \\ \hline (3)\,\,C_4\,\,-\,\,cycle & (c)\,\,Meristemtic\,\,tissue \\ \hline & (d)\,\,High\,\,productivity \\ \hline \end{array}$

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The scientific name of potato is:

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The giant Redwood tree $($Sequoia sempervirens$)$ is $a/ an:$

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Which of the following factor is responsible for regulating the size of the potato slices during osmosis:

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Chose the correct option

$(1)$ On and average a healthy human breaths ...$X$....times/minutes

$(2)$ Every $100\, ml$ of oxygenated blood can deliver around ....$Y$.... of $O_2$ of the tissues under normal physiological conditions.

$X-Y$

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