What is the causes of abnormal wood (CW/TW)?
APhilips says (1940), it is due to wind
BTo Evarts and Mason (106) it is due to gravity
CWersking and Baily, due to (1942) increase or decrease in plant hormones
DMetzger (1908) says it is due to tension and compression
EAll of the above
Correct answer
E. All of the above
Explanation
The correct answer is All of the above.