Name important defence mechanisms in plants against herbivores.

What are the various defence mechanisms developed by the prey against predation.

Name two important xenon fluorides.

What are the morphological and chemical defence of plants against phytophagous insect?

Simple tissues that perform mechanical support in plants and usually dead tissues. Name the living simple tissue that provides mechanical support to plant organs. In which category of plants(dicots/monocots) do they found?