A. Damage to leaf tissues
A.
B. Studying the crop
B.
C. Killing branches
C.
D. Stunting effect
D.
Correct Answer: B
সঠিক উত্তর: B
Explanation
ব্যাখ্যা
Studying a crop does not physically reduce its biomass. It only involves observing and analyzing the plant, not affecting its growth or size. Damage to leaf tissues, killing branches, and stunting effects all directly decrease the total biomass of the crop by impacting its growth or development.