Oospores of downy mildew (green ear) of bajra contain

✅Explanation:
-Oospores of downy mildew, including the species causing green ear disease in bajra (pearl millet), typically have three walls. The outermost wall is thick and ornamented, the middle wall is thin and smooth, and the innermost wall is delicate and surrounds the protoplasm. This three-layered wall structure provides protection and resilience to the oospore, enabling it to survive harsh environmental conditions and remain dormant for extended periods.