The trees of tropical rainforest have buttress roots because

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UPSC CAPF(AC) Exam 2015 Questions Solved

Question 41 In an examination, there are three subjects 'A', 'B' and 'C'. A student has to pass in each subject. 20% students failed in 'A', 22 % students failed in 'B' and 16 % students failed in 'C' The total number of students passing the whole examination lies between
A) 42 % and 84%
B) 42 % and 78 %
C) 58% and 78 %
D) 58 % and 84 %
Answer: A) 42 % and 84%

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Question 42 Which one among the following is NOT a minor plate?

A) Nazca
B) Arabia
C) Philippines
D) Antarctica

Answer: D) Antarctica

Question 43 The trees of tropical rainforest have buttress roots because

A) they help to provide aeration to soils
B) the organisms found in the buttresses have a symbiotic relationship
C) the trees belong to gramineae family
D) the buttresses have to bear the mechanical load of hardwoods

Answer: B) the organisms found in the buttresses have a symbiotic relationship