Correct option is A
✅ (a) Little leaf of brinjal: • Caused by Mycoplasma-like organisms (Phytoplasma). • Transmitted by leafhopper vectors. • Symptoms include small-sized leaves, stunted growth, and lack of fruiting. • A serious disease in brinjal (eggplant) production regions.
❌ (b) Banana bunchy top: • Caused by a virus (Banana bunchy top virus - BBTV).
❌ (c) Yellow vein mosaic: • Caused by Yellow Vein Mosaic Virus, not by mycoplasma.
❌ (d) Sterility mosaic: • A viral disease of pigeon pea caused by Pigeonpea sterility mosaic virus.