Given below are five terms. Rewrite the terms in the correct order so as to be in a logical sequence with regard to photosynthesis: (i) water molecules, (ii) oxygen, (iii) grana, (iv) hydrogen and hydroxyl ions, ( v) photons. 

Complete the following food chains by writing the names of appropriate organisms in the blanks.

(i) Grass - _____ Snake - _____.

Complete the following food chains by writing the names of appropriate organisms in the blanks.
_____$\to$ Mouse $\to$_____$\to$ Peacock.

Complete the following by filling the blanks $1$ to $5$ with appropriate words/terms/phrases:

To test the leaf for starch, the leaf is boiled in water to $\left(1\right)$ _____. It is next boiled in methylated spirit to $\left(2\right)$ _____. The leaf is placed in warm water to soften it. It is then placed in a dish and $\left(3\right)$ _____ solution is added. The region, which contains starch, turns $\left(4\right)$ _____ and the region, which does not contain starch, turns $\left(5\right)$  _____.