Question

neatly draw and lable cross section of leaf

Answer 1

i) Oxygen

ii) They take up CO2 at night and prepare an intermediate which is acted upon by the energy absorbed by chlorophyll during the day. 

 Desert plants [xerophytic plants]

Answer 2

$\huge \red{a} \pink{n} \blue{s} \orange{w} \green{e} \purple{r}$

A cross section of a leaf shows that it is a complex organ built of several different kinds of specialized tissues. The tissues, in turn, are built of specialized cells, and the cells, of organelles.[Figure1] Epidermis covers the upper and lower surfaces of the leaf.