question_answer 25)

  Formation of tropical forests needs mean annual temperature and mean annual precipitation as (a)18-25°Cand 150-400 cm                            (b)5 - 15°C and 50 -100 cm (c)30-50°Cand 100-150 cm                            (d) 5-15°C and 100-200 cm

Answer:

                  (a) Formation of that tropical forest need annual temperature 18-25°C and annual rainfall(precipitation) above 140 cm, usually between 150-400 cm and reach up to 1000 cm/year. Tropical forest (tropical rain or evergreen forest mainly occurs in equatorial or subequatorial region like Amazon, Central America and Orinco and Congo river basins of South America and Africa respectively The other options are incorrect. Note The average mean temperature to form a tropical/subtropical rainforest is '17°C -25°C and climate is characterized by mild winter.