Q. What is the primary biological agent responsible for the Root Wilt Disease (RWD) in coconut palms, characterized by the flaccidity of leaflets?
Answer: D
Notes:
Explanation:
Root Wilt Disease of coconut is caused by Phytoplasmas (wall-less prokaryotes). They are specialized bacteria that live in the plant phloem tissue and are transmitted by insect vectors like lace wings and plant mourners. It is a major non-lethal but debilitating disease in South India.
