Phloem is called the complex tissue while parenchyma is a simple tissue. Make the differences.

Xylem is the complex tissue that transport water in plants. Name the main components of xylem. Which of these is mostly likely suitable for conducting water?

Some tissues in plants are not able to divide further. (a) Suggest the name of such tissues. (b) Give any three examples. (c) List the difference between epidermal tissue system of roots and leaves.

The prefixes 'erythro' and 'threo' are used for distinguishing a pair of enantiomers containing two chiral carbon atoms when two of the atoms or groups on each chiral carbon atom are the same while the third is different. The stereoisomer, in which the two identical groups are on the same side of the Fischer projection formula, is called the erythro isomer while the isomer, in which the two identical groups are on the opposite sides of the Fischer projection formula, is called the threo isomer. Erythro isomer among the following is :