In a leaf,the position of protoxylem is:

Sunken stomata are found in the leaves of

Many types of grass leaves have the ability to roll or unroll because they contain ........

Describe the internal structure of a dorsiventral leaf with the help of labelled diagrams.

Point out the differences in the anatomy of the leaf of peepal $(Ficus \text{ } religiosa)$ and maize $(Zea \text{ } mays)$. Describe the key anatomical differences.

Plant cells that are photosynthetically active are found in the $A$ layer of leaves and are $B$. Choose the correct combination of $A$ and $B$ from the below given options.