[" (cular bundles "],[" rms the major "][" 37.Which of the following causes almost unbearable "],[" irritation of the skin? "],[" (a) Lint of Gossypium "],[" (b) Staminal hair of Tradescantia "],[" (c) Prickles of Rosa indica "],[" (ed) Stinging hair of Urtica dioica "]