The answer is B.
Sex cells are formed by a process called meiosis, not mitosis.
Phototropism, Gravitropism, Thigmotropism, <span>Hydrotropism and Heliotropism</span>
Some names are:
Raw cotton - Textiles
Limestoe - Cement
Iron ore - Steel
Bauxite - Aluminium
Wool - Woollen cloth
Soya seed - Soil oil
Mustard seed - Mustard oil
Ground nut - Ground nut oil
Sugar cane - Sugar
Hides and skins - Leather
Naphtha - Petrochemicals